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家 在线测试 CES Chemical tanker Deck Support Test online CES 5.1 for Deck department, Support level, Chemical tanker vessel
在线测试： Test online CES 5.1 for Deck department, Support level, Chemical tanker vessel
在线测试
描述
该测试由有关选定主题的随机问题组成。
问题 1 从 90
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On a cargo ship, where should we find the hydrants ?
At such locations that no part of the ship normally accessible to the crew while the ship is being navigating is located more than 20 meters away from a hydrant
At such locations that at least two jets not emanating from the same hydrant may reach any part of the ship normally accessible to the crew while the ship is being navigating, each of these jets coming from a single length of hose.
At such locations that no part of the ship normally accessible to the crew while the ship is being navigating is located more than 40 meters away from a hydrant
At such locations that at least two jets not emanating from the same hydrant may reach any part of the ship normally accessible to the crew while the ship is being navigating, one of these jets coming from a single length of hose (the other jet may come from a connection of several lengths of hoses)
What is false regarding the function :” Reception of shore to ship distress alerts ”
On area A1 this function is based on the use of VHF DSC
On area A2 this function is based on the use of MF DSC
On area A3 this function is based on the use of HF DSC
On all areas this function is based on the use of SARSAT COSPAS Epirb
By “collect call” is meant:
a call for account of the receiver
an urgent call
Don't know
a group call
A Cargo Ship Equipment Certificate will be issued for :
A period not exceeding 24 months
A period not exceeding 48 months
A period not exceeding 6 months
A period not exceeding 12 months
What possible reason could there be for the identification mark associated with a Racon not being visible on the radar screen?
The radar may be suppressing the mark with application of the Interference Rejection control.
The racon may not be transmitting a pulse.
All of the suggested answers.
The transmitted radar frequency may not trigger the Racon transmitter.
Who is responsible for the number and the position of any tugs to be used during a mooring operation?
The Master, with consideration of the advice of the pilot
It will be only the wind speed that will determine the required number of tugs and how they are used.
The Port Authority will dictate the tug requirements and their use within the port limits
The Pilot is fully responsible for the number and use of tugs within the port area
Your vessel is going alongside a pier. Two tugs will assist at the mooring. How would you use the tugs, and at which position?
Pushing on ship-s flat side and make fast in the vessel for pulling if needed
One made fast forward for pulling, one pushing aft
Fast FWD and AFT in center lead
Pushing on ship-s flat side not made fast to be able to move in best position if needed
The vessel is to anchor with Pilot onboard. Which of the suggested answers most accurately define the main duties of the Officer of the Watch on bridge?
Monitor the bridge equipment and keep the Master informed of all outputs
Assist the Master and pilot and monitor the ships position.
Follow Pilots orders and ensure the anchorage is carried out successfully
Follow the Master's orders at all times.
When a ship is lying at anchor in a tidal area using both forward anchors, to what particular aspect should the officer of the watch be paying special attention?
When the ship swings to the tide the direction of swing should be controlled to avoid the anchor cables becoming wrapped round each other.
The ship will become controlled by the tide and the wind will not be allowed to have any effect on the direction the ship lies at anchor.
The two anchors will restrict the ships swing with the tide and the ship may not lie to the prevailing current and wind
The tension on both cables should be similar, to avoid one dragging and all the weight of the ship remaining on the other anchor only.
What are the advantages of having mooring wires stowed on self-stowing "split drum" winches?
Increased brake holding capacity due to the ability to keep the paid out wire in a single layer on the drum
Less chance of the wire becoming jammed on the reel
All the listed alternatives answers
No crushing of the wires
What is the weather associated with being in the centre of an Anticyclone (a region of High Pressure)?
Persistent rain and very humid weather
Strong winds and heavy rain
Strong winds but with very little rain
Light winds and fair weather, sometimes fog.
In a large, 2 stroke, main diesel engine cylinder lubricating oil is supplied directly through lubrication points cut into the cylinder liner. At what point during the cycle should the supply normally occur.
At mid-stroke of the piston.
As the piston rings pass the lubrication points.
At Bottom Dead Centre.
At Top Dead Centre.
Which of the given statements can be considered as the most accurate according to the IMO Gas Codes and other LNG industry standards?
Methane is neither toxic nor an asphyxiant gas.
Methane is considered as presenting a flammable hazard and may also be an asphyxiant.
Methane is considered as presenting both flammable and toxic hazards.
Methane is considered as presenting a toxic hazard and may also result in a chemical burn in contact with the skin.
What is meant by the term "segregation"?
The stowage of cargoes when calculated by a computerized load program.
The planned, separated stowage of cargoes that may react dangerously with each other in the event of leakage or other damage.
The process of electronically transferring the data on cargoes loaded on a vessel between the load port and the discharge port, such that import dcumentation is prepared in advance of the vessel's arrival.
The planned adjacent stowage of packaged goods, thereby confining a listed hazard within the same area of the ship.
To conform with "best practise", can you drive a crane and stand-by for a colleague who has entered a cargo tank at the same time?
Yes.
Normally no, but if we are in a hurry to get lots of jobs done before entering port and the Chief Mate know about it, then it is alright to do so.
No.
Yes, if I have radio contact with the man inside the tank.
At what temperature is it recommended that frozen fish is stored?
0degrees Celsius.
Between 1 and 4 degrees Celsius.
-2 degree Celsius.
-20 degrees Celsius.
From the options given select the one which best completes the following statement. "The preferred method of handling pallets of fruit in the 'tween deck of a conventional reefer vessel would be…
…using a bio-ethanol powered fork lift truck."
…using a diesel powered fork lift truck."
…using carefully sited snatch blocks and strops."
…using a battery powered fork lift truck."
What are the required data inputs into most gyro compasses to reduce any possible compass error?
All of the data in the suggested answers
Latitude and Speed
Maximum helm angle and rolling period
Deviation and Variation
Training manuals for Life Saving Appliances and Fire Fighting systems and equipment shall be provided in crew mess room, recreation room or in each crew cabin. The training manuals shall explain the following in detail:
Emergency procedures including alarm signals, general instructions and safety practice onboard, specific information on equipment, operation of equipment
Manufacturer's specific information on equipment including maintenance procedures, operation of equipment
General Emergency procedures
Alarm signals and donning of lifjackets
On a General Cargo vessel, how should steel coils be stowed?
With their cores aligned athwartships
With their cores aligned alternately fore and aft and athwartships
With their cores aligned vertically
With their cores aligned fore and aft
What diminishes the proper functioning of twistlocks?
Vertical accelerations
Continued action of longitudinal forces
Heavy rolling
Continued use with over height containers
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.
Ship's generators must be synchronised before they can be connected to the same supply network. Prior to synchronising, the generator voltage and frequency are respectively adjusted by:
Voltmeter and frequency meter
Synchroscope and speed governor
Speed governor and load power factor controller
AVR and speed governor
There are many applications in circuit theory where it is important to obtain the maximum possible power that a given source can deliver. This figure consists of a practical voltage source V(g) with internal resistance R(s). What resistance R(L) will maximize the power transmission from the source to R(L)?
R(L) = R(s)
R(L) = 2 R(s)
R(L) = 0.5 R(s)
R(L) = R(s) / sqrt (3)
The bones in the human body are connected to each other by:
Different type of joints
Muscles
Fibrous tissues
Tendons
What must you ensure when using portable slopes to discharge ro-ro units?
They must be new
They must be free of dirt
The surfaces must be of the fish-bone type
They must be exactly aligned with the units’ tyres
One of the categories of information that must be included in your SSP is:
Security arrangements
Threat scenarios
Weaknesses in security measures
Ship security survey
At the design phase of a container ship, how is the loss of strength resulting from the large deck openings, compensated?
Large deck beams longitudinally and athwartships at the sides and ends of hatches
Additional transverse bulkheads
Large doubling plates at the hatch corners
Additional longitudinal bulkheads
Ballast introduced into a cargo tank on a chemical tanker which has been washed to such an extent that the ballast contains less than 1 ppm of the substance previously carried may be discharged into the sea without regard to the discharge rate, ship's speed and discharge outlet location, but under certain conditions. What are those conditions?
That the vessel is not less than 50 miles from the nearest land and is proceeding on route.
Provided the ship is underway and a sample of the ballast water has been drawn from the tank and is stored on board, there are no additional conditions to be imposed on such a discharge.
That the discharge is passed through the Oil Discharge Monitoring Equipment and a visual watch is maintained on the vessel's wake.
That the vessel is not less than 12 miles from the nearest land and is in water that is not less than 25 metres deep.
This circuit symbol is an amplifier system and its frequency response diagram. Which control function is the system performing?
Proportional + derivate (PD)
Integral (I)
Proportional + integral (PI)
Proportional + integral + derivate (PID)
Which of the following food types or food components listed below is considered to be dangerous to health if consumed on a regular basis?
Soft fruit.
Root vegetables.
Moderate volumes of fibre.
High levels of sodium.
Cargoes of which of the following groups produce a particularly violent reaction when mixed with an equal quantity of water?
Acids.
Acrylates.
Glycols.
Caustics.
What is one way to try to overcome people's fears about loved ones?
Inform them about the nature of the emergency.
Prevent them from looking for their loved ones.
Assure them that the crew is sweeping the entire ship for passengers.
Give them a lifejacket to put on.
Under normal circumstances 21% O2 is diluting toxic gases, which one are we talking about?
None to be diluted?
Carbon monoxide, nitrogen dioxide, nitric oxide, sulfur dioxide?
Natrium monoxide, ferro chloride, hydrogen sulfide dioxide?
Sulfur, monoxide, hydro chloride, carbon dioxide?
The arrival ballast water must contain maximum 15ppm (parts pr. million) of oil to fulfil the regulations in force. How many ppm is 1% by volume.
1000 ppm.
100 ppm.
100000 ppm.
10000 ppm.
When preparing a cargo tank on a liquefied gas carrier for loading cargo following inspection of the tank a number of different steps are required. What is the first step required after such an inspection?
Inerting.
Drying.
Gassing up.
Cooling down.
On a container vessel, what dictates the roll angle and natural roll period of the ship?
Wave conditions
Hull form
Transverse distribution of container stack weights
Metacentric height
A CBT-tanker arrives at the loading port in ballast condition. What is today’s normal procedure for this type of vessel when loading?
Deballasting and loading simultaneously.
The vessel’s decision.
Pump out all the ballast before commencing loading.
Load a part of the cargo, de-ballast and resume loading.
What should the Fitter be asked to do?
The Fitter should be asked to stack empty oil drums on the forecastle
The Fitter should be asked to dispose of empty oil drums overboard
The Fitter should be asked to drain hydraulic oil into the sea
The Fitter should be asked to check the level of hydraulic oil in the header tank
On the figure there are four (4) possible definitions of the term "AIR DRAUGHT" given. Which one is the correct one?
Air draught is given by B on the figure
Air draught is given by A on the figure
Air draught is given by D on the figure
Air draught is given by C on the figure
What would it imply if at the discharge port cargo was found contaminated by a previous cargo?
That cargo interests will refuse to accept the cargo
That the vessel was unseaworthy when the voyage commenced
That the vessel will be arrested by cargo interests
That the vessel will be detained by port state control
What is of utmost concern when steel cargoes are carried in a bulk carrier?
Bending moments being greatly exceeded in the seagoing condition
A relatively small range of stability as compared to carrying grain
The springing of hatch cleats as the vessel flexes due to torsional stresses
Deformation due to torsional stresses
What is important when checking cargo lashings on a General Cargo Vessel?
The number and extent of lashings
The tightness of all lashings
The strength of lashing materials
The type of lashing materials
In a crisis, which crew behaviours are most reassuring to passengers?
keeping up with safety knowledge
enthusiasm, confidence, hospitality
dependability
enthusiasm, confidence, decisiveness
What is the minimum number of lifebuoys that shall be provided with self-igniting lights an self-activating smoke signals?
At least 1
4
2
50% of the total number of lifebuoys
Which plan shows the position of the vertical and longitudinal centres of gravity for each cargo compartment of a Bulk Carrier?
Shell expansion
Line drawing
Vessel stability book
Capacity Plan
With reference to non-VIT diesel engine high pressure fuel pumps that have helix control, how is the timing of fuel injection normally adjusted?
By raising or lowering the pump plunger relative to the pump barrel.
By rotating the pump plunger relative to the pump barrel.
By changing the governor output signal.
By changing the opening pressure setting for the fuel injection valves.
A lubricating oil having a high viscosity index number would normally be used in which of the following situations?
When the machinery operates at a very high temperature.
When the machinery operates at a high load.
When the machinery operates at a very low temperature.
When the machinery operates over a wide temperature range.
The use of combustible material is restricted in the accommodation spaces in order to:
Reduce cost of construction
Prevent occurrence of fire and explosion
Don't know
Contain and suppress fire and explosion in the compartment of origin
What is the maximum quantity of cargo permitted to be carried in a single tank on a type 2 chemical tanker?
3400 cubic metres
3000 cubic metres
2400 cubic metres
2750 cubic metres
In a heat exchanger where seawater is used to cool fresh water, the seawater pressure should be maintained lower than the freshwater pressure to:
Minimize the load on the seawater pump
Eliminate scaling problems on seawater side
Reduce erosion
Prevent contamination if leaks are developed
Do we find integral tanks as cargo tanks on gas carriers?
Integral tanks are normally not allowed on gas carriers other than LPG carriers
Integral tanks are allowed on all types of gas carriers
Integral tanks are normally not allowed on gas carriers if the cargo to be carryed have boiling point less than –10oC at atmospheric pressure
Integral tanks are normally allowed on gas carriers if the cargo to be carryed have temperature above –10oC
A transformer overheats while taking a shore supply. Which is the likely cause?
Incorrect voltage
Incorrect current
Incorrect earthing
Incorrect frequency
A crew member is seen to collapse on entering a cargo hold of a bulk carrier; what action should be taken?
First aid must be given
A full emergency must be declared
Inform Chief Officer
Crewman to be assisted out of hold
What is the advantage of a large ship?
The advantage of a large ship is that it contributes to safe transportation of goods
The advantage of a large ship is that it can cope with most emergency situations
The advantage of a large ship is that it can easily be manoeuvred
The advantage of a large ship is that it is economical to operate
What makes cargo holds weather tight?
The hatch coaming compression bar
Firm contact between the hatch cover rubber seals and the hatch coaming compression bar
Steel-to-steel contact between hatch covers and coaming
Hatch cover rubber packing
What does the term "ullage" refer to?
The measured depth of product in a cargo tank.
The height from the bottom of a cargo tank to the top.
The special calculations that the Chief Officer makes when he works out the ship's final draughts before sailing.
The depth of free space left in a cargo tank above the current liquid level.
The engine RPM drops because of:
Fuel oil pipes or filters are clogged.
High lubricating oil temperature.
Leaking exhaust valves.
Bad fuel oil quality.
Which of the following symptoms would indicate that the filter drier in a refrigeration circuit has become blocked?
A hammering noise from the drier.
A pressure rise before the drier.
A large temperature drop across the drier.
A hammering noise from the compressors.
Which ideal heat engine cycle is the vapour-compression refrigeration system based on?
The Otto cycle.
The Rankine cycle.
The Dual cycle
The reversed Carnot cycle.
How often shall abandon ship- and fire drills take place onboard ro-ro passenger vessels?
Monthly
Weekly
Bi-weekly
At least two abandon ship drills and one fire drill every month
When the temperature of the air increases with height it is known as a "Temperature Inversion" and may influence the performance of some instruments on the ship. What should the bridge Officer of the Watch be prepared to happen?
The GPS may give errors of position because of interference of incoming signals from the satellites
The bearings obtained from the Directional Finder (DF) will not be as accurate as normal
Abnormal ranges of VHF RT and Second Trace Returns on the radar
The radar will be show abnormal sea clutter as the pulse is trapped by the inversion.
What is the maximum design working pressure for an Independent Type A cargo tank as may be used for the cargo containment system of a fully refrigerated LPG/Ammonia carrier?
Atmospheric pressure.
18 bar gauge pressure.
0.7 bar gauge pressure.
2 bar gauge pressure.
The auxiliary boiler for the supply of low pressure heating steam has an automatic combustion control which operates on a two step control principle. The boiler fails to attempt to start up during a period of normal operation even though the steam pressure has fallen below the set point. What is the most likely cause of this fault?
The photocell for detecting flame on is dirty.
The pressure switch for the combustion air supply is faulty and remains open.
The pressure switch for low steam pressure is faulty and fails to close.
The electrical supply for the control system is isolated.
Besides the Jensen Sling, what other method is used to load and discharge paper reels from a general cargo vessel?
The vacuum lift
Wire net slings
Wire ropes
Endless rope slings
How can you avoid and/or reduce potential panic among passengers, if an emergency situation occurs?
Checking that all crew and passenger are present
Inform passengers at frequent intervals over the public announcement system about the situation and how they shall act. Use as many of the ships officers and crew among the passengers to assist.
Do not inform passengers about the situation. It will only create panic and make it difficult for the crew to handle the situation.
Inform the passengers, that there is nothing to worry about, to keep them calm.
What name is applied to foods (in particular meat) that have been prepared according to the rules of Islam?
Kamal.
Hamal.
Tamal.
Halal.
Refrigerated cargo spaces are fitted with temperature sensors and in some cases carbon dioxide sensors. From the options given select the one which best completes the following statement. "Monitoring the carbon dioxide content in a cargo space loaded with fruit can be useful because…
… low levels indicate that there are insufficient numbers of air changes."
… increasing levels indicate that the fruit may be starting to ripen."
… its presence indicates that the fruit is ripe."
… its presence indicates that the fruit is still not ripe."
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.
On a RoRo vessel, where will escaping gasoline vapours settle in a cargo hold? If the forced ventilation system is shut down
At deckhead level
At the lowest levels
At all levels
A thermistor which provides feedback for a thermal control system is suspected to have failed. Assuming there is no available replacement, which of the following methods may be used to prove it has failed?
Connect a mV source in parallel with the thermocouple connections.
Connect a mA source in parallel with the thermocouple connections.
Disconnect the thermocouple lead from the conttroller and replace with a mA source.
Disconnect the thermocouple lead from the controller and replace with a mV source.
On a RoRo vessel, which of these stowage situations produces high friction that does not allow movement of the cargo?
A single tier of dunnage placed between vehicles and steel decks
Steel plates placed between vehicles and steel decks
Vehicles in direct contact with steel decks
Two tiers of dunnage placed between vehicles and steel decks
The economizer is used for
Desuperheating of the steam
Heating of the feed-water
Lower the superheater temperature
Heating of the fuel oil
A palletised cargo is being loaded onto a reefer vessel. The cargo is stowed on wooden pallets. Select from the options given the best method to be used for lifting the pallets onboard the vessel in order to avoid damage to the pallet boards.
By using woven strops.
By using wire strops.
By using rope endless strops.
By using a patented semi-balanced lifting fork.
When cleaning boiler burner nozzles that have just been in service the watch rating notices that the nozzle holes are partially blocked. Which of the methods given in the options is the preferred method to use in order to avoid damaging the nozzle holes?
Poke the holes clear with a welding rod which has been ground down to size.
Knock the nozzle repeatedly on the work bench to try and dislodge the blockage.
Use a standard drill bit in a hand drill to clear the blockage.
Use cleaning wires starting with a small gauge and gradually work up to the full size of the nozzle hole.
The circuit consists of two inductors, L(1) = 6 H and L(2) = 12 H, in series. Calculate the equivalent total inductance.
L(S) = 18H
L(S) = 0.5 H
L(S) = 1,5 H
L(S) = 4H
On the air compressor's crankcase there is a small valve that lets off overpressure. What do we have to do if this valve is letting off pressure and oil moisture ?
Check the clearance in the bearings.
Increase the flow of cooling water.
Overhaul the compressor unit.
Block the valve because it pollutes the engine room (block off the valve).
Why is it important to have an efficient fire patrol system on board passenger ships?
To show passengers in public areas we are on duty 24 hrs
To control that passengers adhere to smoking regulations on board
To ensure that an outbreak of fire may be prompltly detected
To verify that the automatic fire-detection system is working properly
What should be done prior to loading cotton?
The cargo hold fire-fighting system should be thoroughly examined
Tank tops should be sheathed
The holds should be inspected for signs of previous cargo residues
The cargo hold ventilation system should be thoroughly examined
Inspection of the LP turbine rotor reveals some erosion damage to the blading on the final stage. Which of the given options is most likely to be the cause of this condition?
Steam inlet to the turbine superheat temperature low.
Steam inlet to the turbine pressure too low.
Excess LP bleed steam take off.
Total dissolved solids in the boiler too high.
By what means can we monitor and control the integrity of the hull?
The chief officer is responsible for monitoring the integrity of the hull and superstructure at all times
Let experienced personnel close and secure doors and ramps
Automatic detection systems, television surveillance and patrolling of ro-ro cargo spaces
Documented operating procedures
Some new maintenance routines are being planned and a risk assessment is necessary so that the required procedures can be entered into the ship's Safety Management manual. Which of the following should be the first step in this risk assessment process?
Identify the safety precautions that may be necessary to prevent injury or harm to personnel carrying out the routines.
Identify who may be harmed or injured in carrying out the maintenance routines.
Identify the hazards that may exist which may affect personnel involved with the maintenance routines.
Identify how much it will cost to implement the necessary precautions to prevent injury to personnel.
What basic information do we get from the pump's flow-head curve?
We get information about the NPSH.
We get information about the pump's suction head.
We get information about the pump's back pressure.
We get information about the pump's lifting height and liquid flow.
What special requirements applies to fire alarm signalling systems in passenger ships
Remote control of fire doors and reactivation of ventilation
Same requirements for Fire alarm systems applies to all ships
Centralized in a continuously manned control station with remote control of fire doors, Indication of open or closed fire doors
Fail safe, Centralized in a continuously manned control station, Remote control of fire doors, Indication of open or closed fire doors, Reactivation of ventilation, Detector status, Back up powered
A ship experiences an interaction effect known as "Squat" when moving in shallow water. The amount of Squat is affected by the speed of the vessel through the water. If the speed through the water is HALVED what will be the change in the affect of "Squat"
The squat effect will also be halved.
There will be a significant change in the reduction of underkeel clearance, but the amount varies from ship to ship
There will be very little change to the effects of Squat.
The squat effect will be reduced to a quarter of its original value
Most medium and high speed diesel engines operate with mean piston speeds greater than those for larger slow speed engines. What is the main design feature of these engines which allows the higher mean piston speeds to be achieved without causing unwanted failures?
Using composite pistons featuring steel crowns and alloy skirts
Fitting bronze rubbing bands to the piston skirts.
Using directly cooled piston crowns with long piston skirts.
Using cast iron single piece piston crowns with a short piston skirt.
Which of the options given is the main reason for using a ring spanner to tighten the brass nuts on the cover studs of a pump casing?
The nuts can be tightened more with this type of spanner.
It will allow the nuts to be tightened correctly.
It will minimise the risk of slipping off the nut or damaging the nuts.
It can be adjusted to the exact size of the nut.
Fuel oil from a leaking fuel pipe has been collected in a drip tray under the boiler furnace.The oil is suddenly ignited by a backflash from the boiler burner.The boiler room is manned and the person present has the choice of various extinguishers. The fire is purely a surface fire. What would be the preferable extinguisher?
CO2
Any of the mentioned alternatives
Water
Powder
Where do we find information regarding fire extinguishers, fire doors, remotes release buttons, fire equipment etc. onboard a ship?
Information related to fire fighting equipment, release systems etc. do we find in ship fire plan.
Information related to fire fighting equipment do we find in the ship drawings
Information related to fire fighting equipment do we find on the bridge
Information related to fire fighting equipment do we find in the engine log book
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
该在线测试包含来自 CES 5.1 测试的 90 道随机问题，涉及您选择的主题。