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Онлайн-тестирование: Онлайн-тест CES 5.1 для Ch-Eng / 2nd-Eng
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Which one of the listed requirements regarding the launching and recovery arrangements for rescue boats corresponds to present SOLAS regulations?
Launching shall be possible at the ship's headway speed up to 5 knots in heavy weather.
The release mechanism shall be of an automatic type approved by the flag state Administration.
Embarkation and launching arrangement shall be such that the rescue boat can be boarded and launched in less than 5 minutes.
Rapid recovery shall be possible with the boat's full complement of persons and equipment.
A lifejacket or immersion suit light has a luminous intensity of, and is capable of working at minimum for a period of:
2 candelas (about 1,7 mile range at normal meteorological sight), 8 hours
2 candelas (about 1,7 mile range at normal meteorological sight), 4 hours
0,75 candelas (about 0,6 mile range at normal meteorological sight), 8 hours
0,75 candelas (about 0,6 mile range at normal meteorological sight), 4 hours
To maintain a fire, three conditions need to be met: Oxygen, combustible material and sufficient temperature for combustion. What subject must be removed to extinguish the fire?
Either of the mentioned alternatives.
Oxygen.
Combustible material.
Heat, Oxygen and combustible material.
Where shall manually operated call points in fixed fire-detection and alarm systems be located in accommodation spaces? (SOLAS II-2/13.2.1)
In messrooms, public lounges and other public rooms
At exits and in corridors
In stairways and escape routes
In all crew and passenger cabins
*Where would you find out which fire sections of the ship are enclosed by "A" or "B" class divisional bulkheading?
On the capacity plan
On the general arrangement plan
All the mentioned alternatives
On the fire control plans
What is the minimum number of "International shore connections" that should be provided on vessels of 500 GRT and above?
3
0- only have to be provided on vessels over 1000 GRT
2
1
What must be the first concern of the fire fighting team leader?
Fire prevention
Fire isolation
Fire fighting
Life saving
The following information must be given on the SART:
Date of replacement of the battries
The date of replacement of the hydrostatic release unit
The name of the operator
The MMSI number sent
By “collect call” is meant:
a call for account of the receiver
an urgent call
Don't know
a group call
What is the purpose of a Medico Message?
Giving a regular statement of the health of the vessel's crew.
Medico is the certificate which permit the Master to be doctor onboard.
Call an hospital for professional medical assistance by radio when needed.
Calling the health department in the next port of call and ask for free radio practice.
You are planning the discharge of a crude oil tanker with segregated ballast tanks, SBT. Which of the cargo tanks should be crude oil washed if you are expecting heavy weather?
All the cargo tanks that were not COW'ed in the last discharge port
At least 30% of the cargo tanks
The dedicated heavy weather ballast tank
Both sloptanks, and 30% of the remaining cargo tanks
A vessel where the engineering personnel are in charge of the whole technical installation is due for a voyage to a cold climate area. What special precautions should be implemented with regard to fire line/pumps and use of same?
Instruct the personnel in routines to prepare the fire line system, e.g. closing all branches and the consequences of not draining the system after use.
All the mentioned alternatives
Drain all fire lines in areas that may be exposed to freezing temperature
Implement special routines for starting fire pumps (e.g. local start/stop operation) to prevent the pumps from being started by mistake, resulting in filling up the system unnecessarily
What is the minimum number of fire control plans that should be permanently stored in a prominently marked weathertight enclosure outside the deckhouse for the assistance of shore side fire fighting personnel?
At least three
At least one
Not required providing one set is available inside the accommodation spaces
At least two
You are on a power-driven vessel underway in open water. This vessel is sighted on the port bow on a steady bearing. What kind of vessel is it and what will your action be?
This is a sailing vessel not making way through the water. There is no risk of collision and I will maintain my course and speed.
This is a vessel engaged in fishing. It is my responsibility to keep clear under rule 18 and I will alter course to starboard, sounding one short blast.
This is a sailing vessel underway. I am the stand-on vessel and will maintain my course and speed under rule 17.
This is a sailing vessel underway, seen head-on. It is my responsibility to keep clear under rule 18 and I will take appropriate avoiding action.
The rudder is hard over when steaming at full ahead in shallow water. How much "lift force" remains when the engine is stopped?
About 10 %
About 50 %
There will be lift force remaining
About 80 %
The minimum number of lifebuoys required for a passenger ship cannot be less than:
6
8
2
10
A person wearing an anti-exposure suit shall be able to:
don and remove the suit in the water in no more than 5min. if it impairs ability to swim
swim through the water at least 25m and board a survival craft
jump from a height equal to that of the stowage of liferafts arranged to be thrown overboard
dive into the water to the maximum draft of craft that the ship is provided with
Which item among those below is included in the normal equipment of every lifeboat ?
one copy of the prescribed life-saving signals
one immersion suit for each person
sea-charts and navigating equipment
a VHF transceiverb
*Which one of the given requirements regarding manning and supervision of survival craft corresponds to the SOLAS regulation?
Every lifeboat required to carry radio telegraph installation shall have a deck officer capable of operating the equipment assigned
There shall be at least 5 trained persons on board, mustering and assisting untrained persons
A deck officer or certificated person shall be placed in charge of each survival craft to be used
Every motorised survival craft shall have a certificated engineer assigned
*Which one of the following items has to be included in an abandon ship drill?
Starting and operating radio life-saving appliances
Launching and recovery of a survival craft
ensuring that passengers and crew are made aware of the order to abandon ship
Manoeuvring the lifeboat in the water
Which of the following detailed explanations should be mentioned in the Training Manual ?
The use of navigational equipment for survival crafts
The use of surface to air visual signals to be used by survivors
The use of escape routes and other escape methods
The use of helicopter rescue gear
What is a contingency plan for ships?
Plan for safety preparedness
Plan for maintenance and repair
Loading plan for general cargo
Plan for next voyage
What action should be taken if the inert gas plant fails during discharge of a liquefied gas cargo?
Slow down the discharge rate until the IG plant is working again.
Open the atmospheric vents to prevent a vacuum in the cargo tanks.
Stop all cargo operations and inform the terminal.
Open the vapour return line from shore to prevent a vacuum in the cargo tanks.
Some 4-stroke engines are fitted with a rotorcap on the cylinder head valves. For what reason?
Rotate the inlet valve during operation.
To prevent the valve spindel to stick..
Distribute the exhaust gas or the air inlet better to improve combustion.
Improve the scaling surface function, increase the service time of the exhaust valve in the engine.
On a Container vessel, what must be done as soon as reefer containers have been loaded?
Their setting temperatures must be verified
They must be connected to the ship's power supply and their setting temperatures verified
Their stowage positions must be reported to the duty officer
They must be connected to the ship's power supply
During the 5-yearly overhaul and operational test of a lifeboat on-load release gear, to what level should the gear be load tested?
0.8 times the total mass of the lifeboat when loaded with its full complement of persons, equipment and stores.
1.25 times the total mass of the lifeboat when loaded with its full complement of persons and equipment.
1.1 times the total mass of the lifeboat when loaded with its full complement of persons and equipment.
The equivalent to the total mass of the lifeboat when loaded with its full complement of persons and equipment.
What is the objective of the merchant navy?
To earn money for the shipowner
To provide employment for persons who wish to become seafarers
To safely transport goods by sea
To transport and deliver goods as quickly as possible
During inspection of a medium speed diesel engine main bearing the shell is found to have approximately 15% of the white metal overlay worn away and some light score marks on the exposed aluminium tin bearing metal. Select the most appropriate action to take from the given options?
Refit the shell as it is, this is an acceptable condition for a thin shell bearing after a period of service.
Use a scraper to remove the score marks from the bearing metal before refitting the shell.
Use a scraper to remove the remaining overlay before refitting the shell.
Discard the damaged shell and polish the journal pin before fitting a new shell.
After cooking, at what minimum temperature must rice be maintained during service?
37.8 degrees Celsius.
63 degrees Celsius.
93 degrees Celsius.
Between 10 and 12 degrees Celsius.
Insulating materials used on liquefied gas carriers are required to have certain properties including a good vapour diffusion resistance. Which of the insulating materials has the highest vapour diffusion resistance?
Mineral wool.
Polyurethane foam.
Perlite.
Polystyrene.
What is the expected state of the refrigerant immediately before the expansion valve in a vapour - compression refrigeration system?
Vapour at high pressure.
Liquid at low pressure.
Liquid at high pressure.
Vapour at low pressure.
What would be the most probable cause of light, smoky exhaust from a diesel engine?
The engine is overloaded.
Air in the fuel oil system.
Fouling of the charge air cooler.
Water carry over from charge air cooler to engine cylinders.
What action should be taken if machinery does not function properly?
If machinery does not function properly, its condition should be noted and plans for further action developed together with the Chief Engineer
If machinery does not function properly, the operational parameteres should be verified and the machinery stopped
If machinery does not function properly, it should be serviced immediately
If machinery does not function properly, the Chief Engineer should be consulted
You are going to overhaul a centrifugal pump in accordance with the PMS. The pump is running under optimal conditions and normally operated. Which of the following parts are expected to deteriorate during normal operation and thereby be due for renewal?
The impeller and the impeller fastening nut.
Ball bearings on the pump shaft, and wear rings on pump housing or impeller.
The distance pieces.
The shaft itself .
What immediate actions should the Officer of the Watch take when the ship goes aground on an uncharted shoal in the middle of the ocean?
Stop engines and call the Master
Stop engines and tell the engine room to switch over to high suctions
Stop engines and immediately request "Full Astern"
Sound the General Alarm and plot the ships position
When measuring level of liquids with a differential pressure meter, the name of the sensing device is:
Pressure diaphragm
Float
Positive displacement tube
Capacitance probe
Which statement is true about loading lifeboats?
Passengers with physical disabilities should go on life rafts.
Passengers with physical disabilities should go on lifeboats.
Only passengers with physical disabilities should go on lifeboats.
Passengers with physical disabilities are loaded from a floating platform.
At sea the fire detection system on the bridge activates and indicates smoke present in No 1 Hold of a General Cargo ship; what action should be taken?
Call Master , sound General Alarm, muster crew and prepare to investigate
Call Chief Officer to investigate initially
Assessment not required at this stage
Investigate by sending lookout to check space
Many modern medium and high speed diesel engines operate at very high power ratings resulting in relatively high bearing loads. In order to accommodate these loads the bearings are required to have a high load carrying capacity. What kind of bearings are normally used for main and bottom end purposes to achieve this?
Thin steel shells with a thin white metal lining.
Thick white metal types with the white metal cast into the keeps to give extra fatigue strength.
Thin steel shells with a copper lead lining and a running in overlay.
Thin steel shells lined with aluminium tin alloys.
You have just finished discharging several grades of chemicals. Why is it important that the Chief Officer has considered "solubility" when planning the tank-cleaning programme?
Because it will have indicated if hydrocarbons will still be present on the tank bulkheads after initial cleaning and that a chemical additive may need to be circulated or sprayed afterwards to remove them.
Because it will have shown which tanks need to be cleaned first.
Because it will have indicated if the cargo residues can be cleaned with water alone, or if a chemical additive will be needed to help break them down.
Because it will have indicated how much odour there is likely to be remaining in the tank after cleaning.
The majority of conversions adopted under the auspices of IMO fall into which of the three main categories:
don't know
Maritime Safety, Prevention of Marine pollution, Liability and compensation
Maritime Safety, STCW, Maritime Security
Safety, Terrorism, ILO
In the figure, which letter indicates what is known as "mooring bits"?
The mooring bits are indicated by B, in the figure
The mooring bits are indicated by C, in the figure
The mooring bits are indicated by D, in the figure
The mooring bits are indicated by A, in the figure
What is the maximum stowage height for containers on deck of a General Cargo Vessel, if the vessel is not specifically designed for the carriage of containers?
The maximum height is two containers
There is no limit apart from point load limitations
The maximum height is one container
Containers must not be carried on deck
When is it safe for ship's personnel to enter the cargo tank of an LNG carrier to carry out routine maintenance and inspection?
Whenever the tank has been emptied of cargo as long as breathing apparatus is worn.
Only when the tank has been discharged and it is fully inerted.
Only after gas freeing and an atmosphere test shows 21% oxygen content.
Whenever a test of the atmosphere shows a methane content of less than 2% of the lower explosive limit (LEL).
During maintenance of a piston rod stuffing box on a large, slow speed diesel engine it is usual to measure the butt gaps between the sealing ring and scraper ring segments. What would be the effect of these gaps being too small?
If the gaps are too small they could close due to the radial wear of the rings before the next scheduled overhaul preventing the rings from contacting the piston rod and sealing it.
If the gaps were too small then no oil could pass up the piston rod to lubricate the sealing rings.
If the gaps are too small the rings could score the piston rod.
If the gaps are too small then the flow of scavenge air through the gland would be reduced and the gland would overheat.
The diode shown performs which function?
Reference the transistor to +15V.
Provide an overload route for transistor current.
Allow Op Amp to top up +15V rail.
Return inductive current to supply at switch off.
Radio frequency signals can carry information from one place to another if they are modulated. There are several ways to modulate a carrier. Which modulating method is illustrated here?
Frequency modulation (FM)
Pulse-code modulation (PCM)
Amplitude modulation (AM)
Pulse-width modulation (PWM)
A mechanical-hydraulic speed control governor fitted to an auxiliary engine is giving erratic speed control causing the engine to hunt wildly even when there is only a small load change. From the options given which is the most likely cause of this condition?
Speed droop setting set too high.
Speed droop setting set too low.
Compensation needle valve is open too much.
Compensation needle valve is not open enough.
Which of the following contain gluten?
Cornstarch (maizena)
Barley meal
Potato flour
White flour
One of the two water level gauge glasses on the high pressure boiler steam drum has started leaking quite heavily. What action, from the options given, should the boiler watch rating take?
Inform the Officer of the watch immediately so that arrangements can be made to replace the leaking glass.
Try and stop the leak by tightening up the clamping bolts as much as possible.
Place a bucket underneath the leak to catch the water to prevent the area becoming slippery.
Shut the steam and water connections to the gauge glass to minimise the loss of water and just use the other glass to check the water level.
What is the definition of "pour point"?
The lowest temperature at which petroleum oil will remain fluid.
The unrestricted fall of liquid into a tank.
The time it takes for tank contents to stop moving.
The highest temperature at which a petroleum oil will remain fluid.
You are assigned to accompany a cargo surveyor during tank inspection. A wall-wash is to take place in tank 3 centre. As the surveyor is preparing his equipment for this, you observe that a drop of sweat falls onto the funnel. What will you do?
Draw the surveyor's attention to it. Take note that he thoroughly cleans the funnel with the wall-wash solvent before collecting the laboratory sample. Report the matter to the Duty officer.
Ask the surveyor to wait in the tank alone while you take the funnel up to the accommodation and rinse it in clean, fresh water.
Immediately instruct the surveyor to leave the tank and collect a substitute set of equipment.
Nothing. The odd drop of sweat will not usually make any difference.
At what calendar interval must cargo hoses in service on board be tested and certified as fit to continue in use?
Every 24 months.
Every 12 months.
They do not need to be tested and re-certified for the first three years, but must be tested and certified every 12 months after that.
Testing is not calendar based. Cargo hoses must be tested and certified every 48 operations.
How can the ship’s master prove that a vessel is British?
By showing survey certificates issued by Lloyds Register in London
By showing the ship-s register
By flying the Red Ensign
By showing a Certificate of Equivalent Competency issued by the MCA
What is the purpose of a cargo vaporiser as fitted to LNG carries?
To check the membranes of the cargo containment system for leakage at regular intervals.
To produce the vapour to displace the inert gas from cargo tanks prior to cooling down and loading and for maintaining the pressure in the cargo tank during discharge.
To produce the nitrogen for removing vapour from the cargo tanks ready for gas freeing.
To generate the boil-off gas for use as fuel in the vessels propulsion plant.
Who will verify the computational results and actual ship data used by the calculation program on a vessel's stability computer?
The master.
The manufacturer.
The Classification Society.
The engineer attending the installation and initial on-site testing.
A power card from a slow speed diesel engine cylinder is abnormal with a low height and the body of the diagram thicker than normal. What is the most likely cause of this?
Fuel timing is advanced.
Partially blocked fuel injection valve.
Scavenge pressure is too high.
Fuel timing is retarded.
On a container vessel, select from the list the most effective method of dealing with a fire in an under deck cargo space.
Boundary cool the cargo hold from the deck.
Deploy the fixed fire fighting system.
Tackle the fire locally with fire hoses.
Turn the vessel off the wind to reduce the relative wind strength.
What is the meaning of the expression 'dead-band'?
It will is not respond to adjustment of set-point
The controller will not react to a process change in this range
The controller will enter 'sleep mode'
It will take some time before the controller will react to a change
What is the meaning of the term purification?
Separation of solid contaminants from a liquid.
Cleaning a liquid.
Separation of two insoluble liquids with different densities, and at the same time removing of solids.
Operation as the 2.nd separator in a serial system.
Which is the "STARBOARD QUARTER", in the figure?
The Starboard quarter is C, in the figure
The Starboard quarter is B, in the figure
The Starboard quarter is A, in the figure
The Starboard quarter is D, in the figure
There are a number of standard reliquefaction plants commonly fitted onboard LPG and other liquefied gas carriers. What type of reliquefaction plant is required for a cargo of Ethylene Oxide?
Two-stage direct cycle.
Cascade direct cycle.
Indirect cycle.
Single-stage direct cycle.
Some diesel engines have alarm and slow down protection in the event of a fire in the scavenge boxes. Choose the option which would be a typical set point for giving a slow down of the engine in the event of a scavenge box fire?
40° C
120° C
50° C
150° C
For what purpose do we have booster pumps on the cargo discharge line onboard gas carriers?
On gas carriers we have booster pumps on the cargo discharge line to increase the discharge pressure and reduce the cargo temperature.
On gas carriers we have booster pumps on the cargo discharge line to increase the discharge line pressure above shore back pressure.
On gas carriers we have booster pumps on the cargo discharge line to easily reduce the flow and pressure to shore line.
On gas carriers we have booster pumps on the cargo discharge line to increase the discharge rate to shore.
Due to the safety of the ship its crew and passengers it is only permitted to ……… in designated areas onboard
ead magazines and newspapers
Use mobile telephones
Drink
Smoke
Which of the following statements is correct with respect to IMDG cargo, loaded on a General cargo vessel, that is also classed as a Marine Pollutant
This cargo can only be loaded under deck
This cargo can only be loaded on deck
Cargo must be loaded in a protected location and preferably under deck if IMDG Code allows
Cargo of this type can be loaded anywhere on board the vessel
What name is given to the part of the discharging operation on an oil tanker when the last remaining contents of a tank or line are being pumped out?
Puddling
Purging
Lifting
Stripping
What is a "closed discharge" operation on an oil tanker?
A discharge operation which is commenced with all manifold and tank valves on the vessel initially set in the closed position
A discharge operation carried out without opening any lids or sighting ports and where gauging is performed either by a fixed system or by a portable system gaining access through a vapour-lock.
A cargo discharge which is performed to a shore tank directly adjacent to the berthed vessel and which is wholly controlled by a terminal operator
The pumping of tank washings, conducted through underwater discharge outlets only
What is the Fitter asked to do?
The portable air pump is out of order
He is to empty the hydraulic oil into the sea
He is to check the heater for the hydraulic oil
He looks for oil drums under the forecastle
The circuit consists of two capacitors, C(1) = 6 µF and C(2) = 12 µF, in parallel. Calculate the equivalent C(S) of the two capacitors.
C(S) = 2 µF
C(S) = 1,5 µF
C(S) = 18 µF
C(S) = 4 µF
You are alongside, port side to, about to commence loading several grades of chemicals. The Duty Officer instructs you over the walkie-talkie to proceed to the port manifold and open the valve to 4 port line. When you get there, there is no hose connected to that line. What will you do?
Open the valve to 4 port line as instructed.
Report the situation back to the Duty Officer. Request clarification and confirmation of the instruction.
Take a look at the starboard manifold. There is a hose loop between 4 port and 4 starboard lines. Assume the Duty officer must have meant this side and open 4 port line on this manifold.
Although there is no hose connected to 4 port line, there is one connected to 3 port line. Assume the Duty Officer must have meant this line and open this valve instead.
Read the text in the diagram and answer this question: What should be given to prospective seafarers?
Approved training in survival techniques
Passport and visa
Recommendations
Survival and protective clothing
In conjunction with which two sets of international regulations should the IMDG Code be read for security purposes?
Part B of the ISPS Code and Chapter II of the Maritime Transport and Offshore Facilties Act.
IMO NVIC 24 and 46 CFR 2.05
Chapter V of SOLAS and Annex II of MARPOL.
Chapter XI-2 of SOLAS and Part A of the ISPS Code.
Liquefied gas is, by IMO, divided into different groups. What is the criterion for this division?
The boiling point, chemical bindings, toxicity and flammability.
The gas pressure.
The nitrogen and hydrocarbon content.
The hydrate formation.
Which type temperature sensors are shown on this picture?
Thermistor type PTC
Thermocouple sensors
Resistance sensors
Thermistors type NTC
In a US port and according to the Code of Federal Regulations, a 'Declaration of Inspection' must be completed before the transfer of an oil cargo can take place. Who is responsible for preparing this Declaration?
The ship's officer in charge of the oil transfer operation.
The Terminal Representative (Loading Master).
The US Coast Guard Captain of the port (COTP) or his designated representative.
The ship's pumpman.
Most perishable cargoes are presented for shipment pre-cooled to the correct carriage temperature. If the cargo is not pre-cooled or has warmed up due to the cold chain being broken it can result in increased metabolic rates. Which of the given options would be the most difficult to deal with if such a situation occurred during a sea passage?
The water produced by the cargo.
The heat produced by the cargo.
The carbon dioxide produced by the cargo.
The trace gases produced by the cargo.
What is the main reason for sometimes having a separate forced lubrication system for the camshaft on large cross head engines?
To prevent the camshaft system being contaminated with any water leaking into the main lubrication system from faulty cylinder liner seals.
Because the camshaft lubrication system has a lower pressure than the main lubrication system.
To prevent any fuel leakage from the high pressure fuel pumps contaminating the oil in the main lubrication system.
Because the camshaft system uses a different grade oil from that used in the main lubrication system.
What can be the result of the combination of free surface and flat tank bottom in partially loaded tank with heavy weathe ballast?
Generation of wave energy.
High metacentric hight.
High vertical shear force.
Longitudial bending moment.
What may be issued by the shipper to indicate that a vessel or her operators will not be held responsible for any damage that may arise from the carrier issuing a clean Bill of Lading, even though the Mate's receipt is marked as "unclean", such as may apply to atmospheric corrosion on steel plates that have been waiting in a port facility for some time awaiting shipment?
A Letter of Credit.
An addendum to the Bill of Lading.
An absolution clause in the shipping documents.
A Letter of Indemnity.
What gas checks must be made to the atmosphere in a general cargo ship deep tank prior to cleaning and after discharge of a cargo of vegetable oil?
The atmosphere must be checked for oxygen, methane gas and carbon dioxide
The atmosphere must be checked for oxygen levels, flammable gas and toxic gas
The atmosphere must be checked for oxygen, hydrogen and acid gas
The atmosphere must be checked for hydrogen sulphide, carbon monoxide and hydrogen gas
How does low expansion foam act as an extinguishing agent when dealing with oil fires?
By cooling only
The heat from the fire causes the foam to produce an inert gas which gradually extinguishes the fire.
By smothering and also providing some cooling
By smothering only
Which electronic component is this graphical symbol illustrating:
Silicon controlled rectifier
Transistor
Zener diode
Triac
Transmission lines play a central role in radio frequency circuits, where they are used to pipe signals around from one place to another within a circuit, and often to an antenna system. General rules for such transmission line is that they must be "matched". Which of the cables below would you use to obtain a matched transmission between Z1 and Z2?
Figure 4
Figure 2
Figure 3
Figure 1
What will You do if the PH-value in the boiler water is over 11?
Increase the dosage of chemicals.
Blow the boiler and renew water until the PH-value is normal again.
Nothing.
Decrease the dosage of chemicals.
While their respective characteristics differ in detail, which of the following main operating features do all positive displacement pumps have in common if they are working under non-cavitating conditions?
The pump will develop a discharge pressure equal to the resistance to be overcome, irrespective of speed.
All of the mentioned alternatives.
Flow is almost directly proportional to speed.
They are self-priming.
Why is it so important to suck back as much freon liquid as possible from the evaporators, before You stop the compressor?
To prevent low condensing pressure during start up.
To prevent low suction pressure during start up.
To avoid liquid coming back to the compressor during start up.
It is not important.
After starting a freon compressor, how long should you wait before opening the oil separator return valve?
After the separator shell has warmed up.
One minute.
Open the valve immediately.
Carefully open the valve.
Which separator operation conditions should be avoided?
The separator works under all conditions.
Low flow.
Low temperature.
Dry running of the pump, high temperature of the contents and various flowrate.
What is the difference between filtration and separation
Filters are suitable for removing fine particles
Water can be removed in the separator but not in the filter
A filter is static
A filter has to be shut down to be cleaned or changed
Данный онлайн-тест состоит из 90 случайных вопросов из тестов CES 5.1 по выбранной вами тематике.