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Главная Онлайн-тесты CES Chemical tanker Deck Support Онлайн-тест CES 5.1 для Deck department, Support level, Chemical tanker vessel
Онлайн-тестирование: Онлайн-тест CES 5.1 для Deck department, Support level, Chemical tanker vessel
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Тест состоит из случайных вопросов по выбранной теме.
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Select the correct send and receive frequencies for sending a DSC ‘distress alert’ in the MF band:
TX: 2189.5 kHz RX: 2177.0 kHz
TX: 500.0 KHz RX: 518.0 KHz
TX: 2187.5 kHz RX: 2187.5 kHz
TX: 2177.0 kHz RX: 2177.0 kHz
A polarisation of a radio wave is determined by:
Length of the aerial
Condition of the aerial
Height of the aerial
Position of the aerial
How many, minimum lines of positions are needed to decide a position using the decca system?
1line of position.
6 lines of position.
2 lines of position.
8 lines of position.
When a vessel is to experience a long tow across an ocean, what would be the best system of connecting the tow?
Towing Hawser from a deep sea tug through the centre lead forward and made fast on the nearest mooring bits forward.
Wire from a deep sea tug made fast through a shoulder lead on the vessel's leeward side
Wire from a deep sea tug through the forward centre lead of the ship and made fast onto several mooring bits on the forecastle
Wire from a deep sea tug connected to the ship's anchor chain.
What would be the correct definition of the term "Squat"?
Squat is the reduction of underkeel clearance due to increase of water flow under the keel and an increase in the water pressure
Squat is the reduction of underkeel clearance of a ship when it moves through shallow water due to a reduction in water pressure.
Squat is the loss of effectiveness of the rudder and propeller as a ship moves through shallow water due to the reduction of water pressure.
Squat is the reduction of underkeel clearance and the possible change of trim of a ship when it moves through shallow water due to a reduction in water pressure.
*The person in charge of a lifeboat :
must check that the crew under his command are acquainted with their duties
must have a list of the survival craft crew
all of the above
must check that the second in command has also a list of the lifeboat crew
In respect of washings from the cargo area of an oil tanker, what is the maximum instantaneous rate of oil that can be pumped into the sea when a vessel is outside a special area, proceeding en route, has in operation a monitoring and control system for the discharge of oil and is located more than 50 nautical miles from the nearest land?
0.03 litres per nautical mile.
30 litres per nautical mile.
300 litres per nautical mile.
60 litres per nautical mile.
Feed check valves for main and auxilliary purposes are normally of the double shut off type, as shown in the diagram. What is the main function of the non-return valve?
To allow overhaul of the screw down valve when the non-return valve is shut and the boiler is steaming.
To allow fine tuning of feed water flow to the boiler.
To prevent the steam and water in the boiler from discharging out by the feed line, if a feed line fracture or a joint in the line blows.
To increase the workload for staff when overhauling the boiler.
How will you calculate transverse accelerations?
Multiply the values taken from tables 2, 3 and 4 of the Cargo Stowage and Security (CSS) Code
Multiply the values taken from tables 3 and 4 of the Cargo Stowage and Security (CSS) Code
From formulae given in the Cargo Securing Manual (CSM)
Rule of thumb and past experience
On some trades fruit cargoes may be subjected to 'in-transit cold treatment' also known as cold treatment. From the options given which is the main purpose of this cold treatment?
To maintain a specified minimum temperature for a prescribed time period to kill off any fruit fly which may be present when loading the cargo.
To maintain the temperature of the fruit within very tight tolerances.
To ensure that the fruit is carried as cold as possible without damaging the fruit.
To achieve uniform quality of the fruit at discharge.
What is the main advantage of having a central cooling system fitted on board ship?
It should require less maintenance than a conventional system using only sea water.
It does not require any seawater.
It is a simple system with minimum control requirements.
Only one heat exchanger is needed for all cooling duties.
What is the requirement regarding number of slop tanks on oil tankers of 70,000 tons and above delivered after 31 December 1979?
Shall be provided with at least 2 slop tanks.
Shall be provided with slop tank.
No requirement regarding number of slop tanks.
Shall be provided with sufficient number of slop tanks.
What method should be used to discharge a semi-pressurised gas carrier if there is a break down on the cargo discharge pump?
By using the cargo compressor to pump the cargo vapour ashore as it boils off.
By using a portable submersible pump to empty the affected tank
By using the inert gas system to pressurise the cargo tank and force the liquid cargo ashore.
By pressurising the vapour space of the cargo tank using a vaporiser and cargo compressor to force liquid cargo ashore.
During a Crude Oil Washing operation, if measurement of the atmosphere within the tank indicated that the oxygen level had risen to above 8%, what action would you take?
Stop the washing operation as you have reached the required level. Pump out the remaining oil and then wash the tank with water.
Contuinue washing, but increase the delivery rate from the IG generator.
Stop the washing operation and do not resume until a level of less than 8% oxygen content by volume has again been acvhieved.
Take no action. It only becomes a critical situation if a level of greater than 11% oxygen content is measured.
What is known as "cargo sweat" on a Bulk Carrier?
Condensation of moisture directly onto the ships structure
Condensation of moisture directly onto the cargo
Condensation of moisture onto the ships structure and cargo
Heating of cargo
The responsible person for maintaining budget on board normally is:
Chief Engineer
Chief Officer
Master
Chief Steward
What must be observed when checking cargo lashing belts on a General Cargo Vessel?
The strength of lashing belts securing a particular item of cargo
The belt manufacturer's instructions
The number of lashing belts used to lash a particular item of cargo
That they are not torn
Under U.S. Occupational Safety and Health Administration (OSHA) regulations when is a Vertical Tandem Lift possible?
When two intermodal containers one on top of the other are connected by semi-automatic twistlocks
When three intermodal containers in a stack are connected by fully-automatic twistlocks
When two intermodal containers one on top of the other are connected by fully-automatic twistlocks
When three intermodal containers in a stack are connected by semi-automatic twistlocks
A diode is in good condition when the following test results are obtained using a Digital Multi-Meter.
With + to A a reading of about 0.6V, and with probes reversed a reading of O/L.
With + to K a reading of about 0.6V and with probes reversed a reading of O/L.
With + to A good continuity ( low ohms) and with the probes reversed a reading of infinity.
With + to K good contiuity ( low ohms) and with the probes reversed a reading of infinty.
Is the location of the Compass Binnacle critical?
Yes, for the reasons stated in all of the suggested answers
Yes, it should be on the fore and aft centreline of the ship
Yes, it should be away from all electrical power cables
Yes, it should be sited on a non-metallic base if possible.
You are testing the atmosphere in a cargo tank on an oil tanker, for the purpose of approving it as safe it for crew members to enter at the end of tank cleaning operations. According to the industry standard guidelines (ISGOTT), what measurements must be obtained before this permission is granted?
8% oxygen by volume and 0% hydrocarbon vapour concentration
21% oxygen by volume and less than 1% LFL hydrocarbon vapour concentration.
Minimum 17% oxygen by volume and not more than 1% LFL hydrocarbon vapour concentration.
21% oxygen by volume and less than 1% UFL hydrocarbon vapour concentration.
When discussing oil tanker design, what do the letters "VLCC" stand for?
Variable Level Cargo Container
Very Large Crude Carrier
Virtual Loss (of) Cargo Capacity
Very Large Combination Carrier
What is the correct procedure when transferring (internal trimming) of oil cargo is necessary?
Obtain permission from charters and note procedures in oil record book and deck log
Ensure the vessel is even keel on arrival port
Only 5% cargo permitted to transfer.
Ensure safe ballast condition
Before leaving the machinery spaces of a UMS vessel after routine watchkeeping rounds in the evening, the duty engineer inspects the doors to Fuel Oil Treatment rooms which are covered by a fixed fire fighting installation. For what purpose does he do this?
Remove the auto closing device so they remain in whatever position they were.
To tie them open with a rope to prevent the heat from building up inside, and making it uncomfortable to work.
To make sure that they are properly closed with the self closing device so that any fire is contained and the extinguishing medium can be released without delay.
Wedge them open with an arrangement which allows them to be closed quickly in the event of a fire.quickly.
A new gasket has been fitted to the manhole cover of a ballast tank. Which of the options given would be a suitable test that the new gasket is correctly fitted?
Carry out a hose test on the manhole cover.
Carry out an air pressure test on the ballast tank.
Fill the tank with water up to capacity.
Fill the tank with water until it overflows through the air vent.
Onboard training should be organised in such a way that:
none of the above
It is an integral part of the overall training plan
Each crew member is trained individually
It does not contravene with the rest hours of the crew
What is the correct definition of: -boat drill?
Training in lifeboat handling.
To drill all boats.
To secure the boats.
To launch the boats.
Too high exhaust temperature in one cylinder becomes because of:
Charge air temperature is too high.
Water leakage in the cylinder.
Too much lubricating oil in the cylinder.
Injection valve opening pressure is too low.
Which of the following detectors would you choose for measuring the torque of a steel shaft?
Pyrometer
Strain gauge
Ultrasonic gauge
Synchro
What is a Gangway?
A Gangway is an interval of time between a change of working gangs, on board
A Gangway is a portable means of access to a ship
A Gangway is an accommodation ladder
A Gangway is a temporary means of access into the cargo holds
Which of the following will be reported to a company on the emergency phone?
All arrival and departure time from port
All near misses
All cases concerning cargo shortages
All accidents where crew are injured or killed
From the options given, choose the one most likely to result in a high exhaust gas temperature in one cylinder of a diesel engine.
The inlet and exhaust valve tappet clearance is incorrect.
Fuel injection valve opening pressure set too high.
Faulty turbo charger.
Clogged nozzle holes in the fuel injection valve.
When cargo discharge reaches stripping levels on an oil tanker, it is necessary to reduce the inert gas pressure. Why is this?
To avoid over-capacity in the IG generator.
To avoid locking the cargo pump impeller.
To minimise blowback.
To comply with MARPOL Annex VI.
What would be the correct form of response to the question: What kind of assistance do you require?
The correct form of response would be: There is a fire onboard my vessel
The correct form of response would be: I need help as soon as possible
The correct form of response would be: I need help on board with a fire and the smoke is very toxic
The correct form of response would be: My vessel has a fire in the accommodation and we require fire-fighting assistance
According to the ISGOTT definition, what is "volatility"?
The tendency of a crude oil or petroleum product to produce gas.
The ability of a crude oil or petroleum product to resist ignition.
The measure of a crudre oil or petroleum product's vapour pressure.
The tendency of a crude oil or petroleum product to ignite.
Which of the following international regulations is normally used when handling dangerous goods?
IMDG code
SOLAS code
KLMNG code
HB code
Your vessel has a controllable pitch propeller. The engine can be started when the propeller pitch is:
25 % ahead
10 % ahead
25 % astern
Zero
What is the correct definition of "lee side"?
Port side.
The side from the wind.
The side against the wind.
Starboard side.
What is the result of a large metacentric height?
The center of gravity will move upwards.
The ship will have a long roll period.
Bending moment will increase.
The ship will roll violently.
A reefer vessel is to load a part cargo of frozen beef hocks (large joints of beef, usually quarters, not packed in cartons). In deciding which would be the most appropriate space on a conventional reefer vessel, which of the given options would be the preferred choice?
Any space will be acceptable as this is a hard frozen cargo and relatively easy to handle and carry.
4A deck as this is the largest square space on the vessel and will allow good access and air flow for the cargo.
A cargo space low in the vessel as this cargo has a relatively high stowage factor.
1C deck as this is the narrowest space on the vessel and will best constrain the cargo from any possible movement during the voyage.
The temperature of chilled air is monitored after it has passed through a refrigerated cargo and the temperature noted. This temperature is often referred to as the RAT. Which of the given options does RAT stand for in relation to refrigeration of a cargo?
Return Air Temperature.
Respirated Air Temperature.
Relative Air Temperature.
Reduced Air Temperature.
Where are cargo residues usually concealed?
In the bilges
In the upper sections of the ship’s frames
In bulkhead corrugations
In recesses below manhole covers
What is the purpose of fixed stacking cones?
To prevent the horizontal movement of 20’containers at tank top level
To prevent the horizontal movement of 40’containers at tank top level
To lock 20’containers in 40’ cell guides
To prevent movement of 20’and 40’ containers at deck level
When is the 2nd Mate supposed to call the Captain?
30 minutes from the pilot station
Just at the usual time
When anything unusual happens, and 30 minutes before the pilot station
Just when he happens to remember
Some liquefied gas carriers require a secondary barrier as part of the cargo containment system. What is the main purpose of a secondary barrier on these gas carriers?
To provide temporary containment of any leakage of cargo through the primary barrier.
To reduce heat leakage into the cargo.
To hold the thermal insulation for the primary barrier in place.
To connect the cargo containment system to the ship's hull.
Why do we use stabilisers on passenger ships?
To adjust the trim of the vessel
To decrease the rolling angle of the vessel
To increase the intact stability
To decrease the dynamic stability
What items of container securing equipment must be used in conjunction with buttresses?
Twistlocks
Single stacking cones and bridge fittings
Double stacking cones or link plates
Single stacking cones
Chemicals and harmful substances are safely stored in a designated locker on board, why?
For safety reasons. Many substances found onboard are capable of damaging the health and safety of those exposed to them. Before any chemical or harmful substance is delivered to a crewmember, the personnel shall receive training, instructions and information so that they know and understand the risks arising from use.
For safety reasons and stock control. When chemicals or harmful substances is delivered to a crewmember, the user shall sign for the amount received.
Chemicals and harmful substances must be kept away from passengers so that they don't steal it.
For stock control. Most of the chemicals and harmful substances we use on board are expensive.
If a public announcement is made during an emergency you should?
Just ignore it and continue working.
Listen carefully and consider if this information is of any value for you personally.
Tell everyone to listen.
Listen carefully and pass on information to passenger who may not have heard it or understood it.
The upper airway consists of:
Mouth, throat and lungs
Mouth, nose and throat
Mouth, nose and lungs
Mouth, throat and trachea
Car decks on board ro-ro passenger ships are nomally closed during sea passage. Why are passengers not allowed to be on the car-deck during sailing?
Vehicles and other cargo can shift when the ship is rolling. Persons may be trapped between vehicles or cargo.
To prevent burglary and damage to cars
If the car decks are empty, it will be easier for the crew to locate all passengers in case of an emergency
In case of an emergency situation it can be difficult for passengers to escape. Vehicles, lorries, trailers and other cargo are maybe lashed and it is a substantial chance for passengers to get injured. Vehicles and other cargo might also shift when the ship is rolling.
What is the result of a large metacentric height?
The ship will roll violently.
The ship will have a long roll period.
Bending moment will increase.
The center of gravity will move upwards.
The Chief officer of a General Cargo Vessel has instructed that ballast tanks must not be allowed to overflow when ballasting alongside. Which of the following is of the greatest concern?
Overflowing ballast water running over side and onto quay resulting in possible damage to shore equipment
Ballast water flowing back into dock
Over pressurising the tank top
Tanks being filled incorrectly
A bulk cargo of Coal is to be loaded in Australia for Europe; the coal is declared as having a high moisture content (but less than the transportable moisture Limit (TML)); what must the Master ensure?
The bilges should have been sealed prior to loading
The bilges must not be pumped out
The bilges must be pumped out regularly
All cargo hold bilges are sounded daily and the amount of water logged; the bilges can then be pumped out.
What is the requirement for a stability booklet covering bulk carriers that carry cargoes other than grain?
It must be written in a language understood by the crew
If written in a language other than English the vessel must also carry a booklet written in the English language
It must be written in a language understood by the ship’s cargo officers
It must be written in English with electronic versions in French, Spanish, Russian and Chinese
The figures show a graphical symbol for a particular electronic component and a typical operating characteristic for the same. Which component?
Zener diode
Transistor
Tunnel diode
Thyristor
What is an analogue signal?
A measure of voltage using an oscilloscope.
A stable electric signal.
A continually variable electric signal.
A measure of electric current.
Which of these foods, when consumed in high quantities, will increase the cholesterol level over time?
Vegetables
Fish
Pork
Chicken
When making a small repair to the furnace refractory lining it is common to make a patch using castable plastic refractory material. Which is the best method, from those given in the options, of securing the patch to the main refractory lining?
Drill holes in the main lining and fix some anchor bolts to cast the patch around.
Cut away the damaged area to form an undercut right around the edge and fill with the plastic refractory material.
Pin some wire mesh across the damaged area and cast the patch over it.
Make a smooth hollow in the damaged area and fill with the plastic refractory material.
Some main propulsion medium speed engine installations operate with a hydraulic oil type fluid coupling between the engine and the reduction gearbox instead of a mechanical clutch. With this type of installation a separate flexible coupling is not normally fitted. Why is a separate flexible coupling usually omitted from this type of installation?
There is insufficient room to fit a flexible coupling between the engine and gearbox when a fluid coupling is fitted.
There are no engine torque variations in the drive when a fluid coupling is used so a flexible coupling is not required.
The hydraulic fluid in the coupling isolates the gearbox from the engine vibrations.
There is natural slippage between the drive and driven parts of the fluid coupling and a flexible coupling would prevent this slippage.
Many liquefied gas carriers are fitted with inert gas generators to supply inert gas to ensure the atmospheres of various onboard spaces are non-flammable. How is cargo vapour from these spaces prevented from back-flowing into the inert gas generator and creating an explosion risk?
The deck IG main is always manually blanked off when the IG system is not running.
There are at least two mechanical non-return devices fitted to the deck IG main.
There is always a deck water seal fitted to the IG main.
The pressure at the generator outlet is always greater than that of the IG main.
What can be the punishment for a shipmaster of a Norwegian ship if he without sufficient cause refuses to receive onboard persons for whom Norwegian authorities must provide transportation?
He shall be liable to imprisonment for a term not exceeding six months.
He shall be liable to fines or imprisonment for a term not exceeding six months.
He shall be liable to fines or imprisonment for a term not exceeding three months.
He shall be liable to fines.
A three phase alternator is connected singularly to the main switchboard. The switchboard instruments show 400 Volts/500 amperes. With a power factor of 0.5 what will be the kW load?
100 kW
57.5 kW
250 kW
173.2 kW
Proper and accurate inventory of stores should be maintained inorder to:
Order the required stores
Report to the office
Control the ship's budget
Show to the port authorities
Gases, including methane, cannot normally be liquefied using pressure alone once they are at or above a certain temperature. What is the term used for this temperature?
Flash point.
Auto liquid temperature.
Critical temperature.
Liquid temperature limit.
What section of the Crew Agreement contains the “Contractual clauses”?
The ship's register
The inside page
ALC 6
ALC 1b
In respect of a chemical tanker, carrying category "X", "Y" and "Z" Noxious Liquid Substances, what is understood by the term "Clean Ballast" as defined in the IBC Code?
Ballast water carried in a tank which, since it was last used to carry a cargo containing a substance in category "X","Y" or "Z", has been thoroughly cleaned and the residues resulting there from have been discharged and the tank emptied in accordance with the appropriate requirements of Annex II.
Ballast water carried in a tank which has been previously washed in accordance with the requirements of the Procedures and Arrangements Manual.
Ballast water that is free of all cargo residues and slops.
Ballast water introduced into a tank permanently allocated to the carriage of ballast or cargoes other than oil or Noxious Liquid Substances as variously defined in the Annexes of the MARPOL Convention and which is completely separate from the cargo and oil fuel systems.
When handling drugs…
Wear skin protection and a facemask.
"Briefly inhale powders, fumes or vapours to verify the substance is a drug."
Test out the potency of the drug.
Shut off the ventilation in the room where the drugs are being stored to ensure any vapours or fumes do not spread to other parts of the ship.
The economizer is used for
Desuperheating of the steam
Heating of the feed-water
Lower the superheater temperature
Heating of the fuel oil
Settlement of disputes, not belonging to the category of the NIS Act, outside Norway between the master and any of the crew regarding wages, the ship service or the employment relationships in general shall be brought before:
The local trade union
The local P&I club.
The Norwegian Consulate
The local authorities
What is the maximum length of a fire zone on any deck?
50 meters
100 meters
40 meters
30 meters
You have just completed the discharge of a cargo of Lube Oil additive and are clearing the ship's lines to shore. What piece of equipment can be fitted between a drain cock and the air line to safely release any excess pressure before disconnecting the air line?
An expansion valve.
A reducer.
A quick-coupling.
A three-way valve.
Which is the "STARBOARD BOW", in the figure?
The Starboard bow is indicated by D, in the figure
The Starboard bow is indicated by C, in the figure
The Starboard bow is indicated by A, in the figure
The Starboard bow is indicated by B, in the figure
Some spaces and zones on a liquefied gas carrier are classed as gas-dangerous as it is likely that they may contain flammable vapour and do not have venting arrangements to prevent this. What is the designation used for the other spaces and zones on liquefied gas carriers?
Gas-safe.
Vapour-free.
Gas-free
Gas-less
What do we mean to gas free a cargo tank?
To gas free a cargo tank means that we remove flammable-, neutral- or toxic atmosphere from the cargo tank
That means that we are discharging the cargo tank
To gas free a cargo tank means that we remove gas from the cargo tank
To gas free a cargo tank means that we are pumping liquid into the tank
You have just completed discharge of a cargo of Iso-Butanol and are preparing for tank cleaning. The pumpman is going round the deck checking the cargo pump cofferdams for any leakage of hydraulic oil or cargo. What term is applied to this procedure?
Proving.
Stripping.
Venting.
Purging.
Earlier reefer vessels designed and built for liner trade usually had two or three tween decks approximately 2 to 2.5 metres in height and deep lower holds approximately 4 to 5 metres deep. Modern designs usually incorporate more decks each approximately 2.3 metres in height. What is the main reason for this fundamental design change?
The increased proportion of chilled as opposed to frozen cargoes that are carried.
There is an almost universal use of standard height pallets.
It is easier to construct vessels with shallow decks.
The increased number of container vessels has reduced the tendency to carry general cargo outbound from Europe or North America to Australia and New Zealand on reefer vessels.
A diesel engine cylinder head is to be overhauled but the spring compressor for removing the valve collets is found to be damaged and unusable. How should the task be carried out by ship's engineers?
Use a couple of screwdrivers to compress the spring and lever out the collets as this will save time.
Use a ring spanner to press down on the spring guide and pick out the collet halves once they are free.
Delay the work until a new spring compressor is available or fabricate a suitable replacement onboard if the work is urgent.
Using a hammer and a tube with an inner diameter slightly bigger than the outer diameter of the collets repeatedly strike the upper spring carrier until the collets pop out.
What is the letter ‘P’ under the IMDG Code?
Pollutant
Marine Pollutant
Severe Marine Pollutant
Packaging
On a Container vessel, what are the vertical corner structures of a container called?
Corner fittings
Casting posts
Corner posts
Corner pillars
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 is the name given to a liquid, in which the bones of a fish, poultry or meat carcass have been boiled, along with some vegatables, to be used later as the basis of a soup or sauce?
Stop.
Stock.
Broth.
Block.
On the figure 4 possible definitions of the term "AFT" are shown. Which one is the correct one?
Aft is defined as B on the figure
Aft is defined as C on the figure
Aft is defined as A on the figure
Aft is defined as D on the figure
How many rocket parachute flares are carried in each liferaft?
6
12
Nil
4
How many buoyant smoke signals are carried in each liferaft?
4
Nil
6
2
How much water per person is provided in a liferaft not equipped with a desalting apparatus?
2 litre
1.5 litre
5 litre
3 litre
What is the correct lifting technique?
Legs straight, back bent and twisted to the right or to the left while lifting
Legs straight, back bent, using back muscles to lift
Legs bent, back straight, using leg muscles to lift
Legs bent, back bent, using both back and leg muscles to lift
If Mouth - to - Mouth (M-T-M) ventilation by itself is unsuccessful and the casualty's heart stops, or has stopped beating, you must perform External Chest Compression (ECC) in conjunction with M-T-M. What is the rythm when performing M-T-M in combination with ECC with one First Aider only ?
10 compressions followed by 3 full ventilations
15 compressions followed by 2 full ventilations.
5 compressions followed by 5 full ventilations.
20 compressions followed by 5 full ventilations
Unconscious casualties who are breathing and whose hearts are beating should be placed in the Recovery Position. Why is this position so important?
The recovery position makes it easy to maintain any kind of bleeding.
The position prevents the pasient from falling asleep.
Because it keeps the heart beating.
The position ensures that an open airway is maintained.
Which one of the listed fire-extinguishing medium is most effective against an open oil fire?
Foam.
Gas.
Powder.
Water.
Данный онлайн-тест состоит из 90 случайных вопросов из тестов CES 5.1 по выбранной вами тематике.