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Maison Tests en ligne CES Chemical tanker Deck Support Test online CES 5.1 for Deck department, Support level, Chemical tanker vessel
Tests en ligne : Test online CES 5.1 for Deck department, Support level, Chemical tanker vessel
Test en ligne
Description
Le test consiste en des questions aléatoires sur un sujet sélectionné.
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*Monoammonium phosphate used as a dry powder can be effective on:
solid, liquid, gases and metals
metals
solid, liquids and gases
liquid and gases
What is the minimum number of independently driven fire pumps that must be provided on general cargo ships of 1000 gross tonnage and upwards?
4
1
2
3
When is a vessel deemed to be an overtaking vessel?
When coming up with another vessel from any direction abaft her beam
When coming up with another vessel from a direction more than 10 degrees abaft her beam
When coming up with another vessel from a direction more than 45 degrees abaft her beam
When coming up with another vessel from a direction more than 22.5 degrees abaft her beam
In which waters are piracy attacks most frequent?
Open sea
Malaysian waters
Indonesian waters
Brazilian waters
Part of the outer surface of a refrigeration compressor crankcase and the refrigerant return line near the compressor ice up heavily during normal operation. Which of the options given is the most likely cause of this problem?
The oil separator is not functioning correctly and is allowing lubricating oil to pass into the system.
The seawater flow control valve for the condenser is faulty allowing insufficient cooling water flow.
The superheat control setting for the thermostatic expansion valve is set too low.
The filter drier unit in the liquid line is partly blocked.
What is the MARPOL definition of a "high-viscosity substance"?
A noxious liquid substance in category "Y" with a viscosity equal to or greater than 100 mPa.s at 37.8 degrees Celsius.
Any noxious liquid substance, the residues of which cannot be stripped from a cargo compartment and its associated piping and pumping system to equal to or less than 75 litres.
A noxious liquid substance of any category with a pour point of greater than 37.8 degrees Celsius.
A noxious liquid substance in category "X" or "Y" with a viscosity equal to or greater than 50 mPa.s at the unloading temperature.
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.
Signals are often used by aircraft engaged in search and rescue operations to direct ships towards a casualty. This aircraft flies across your stern, rocking his wings. What is the meaning of the signal?
The aircraft is telling me he does not understand my last message.
The assistance of your vessel is no longer required.
This is part of a sequence of manoeuvres by which the aircraft will indicate a direction for my vessel to proceed in.
The aircraft is telling me he is preparing to drop supplies or personnel in the water.
What is the function of a sacrificial exchangeable wear plate?
It protects hull plating around the bulbous bow
It protects the hull plating around cell guides
It protects twistlocks against wear down beyond a certain limit
It protects hull plating around the stern frame
What is the purpose of the deck water seal on the deck of an oil tanker?
To prevent the passage of petroleum gases back to the machinery spaces.
To automatically compensate for temporary fluctuations in inert gas pressure within the cargo spaces.
To provide a second washing cycle to inert gas.
To automatically adjust the inert gas flow.
Cross-flooding fittings shall be operable from:
The engine room
The section where the unsymmetrical flooding occurs
Above the bulkhead deck
The bridge
LNG is made up of a number of saturated hydrocarbons the greatest percentage of which is Methane. What are saturated hydrocarbons?
Saturated hydrocarbons contain atoms of hydrogen and carbon and also other elements such as chlorine.
Saturated hydrocarbons contain hydrogen and carbon atoms with single carbon to carbon bonds.
Saturated hydrocarbons are compounds of hydrogen and carbon which contain the maximum amount of water vapour.
Saturated hydrocarbons contain hydrogen and carbon atoms with double carbon to carbon bonds.
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.
f the car decks are empty, it will be easier for the crew to locate all passengers in case of an emergency
To prevent burglary and damage to cars
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.
A cable has a resistance of 1 milli-ohm per metre. It supplies a 300A load over a distance of 100 metres. What is the voltage drop along it's length?
300 milli-volts
3.0 volts
30 volts
300 volts
What are the common types of independent nitrogen generator found on chemical tankers?
x
membrane and
What is difficult to attain on a partly loaded general cargo vessel?
Stability requirements under SOLAS
Minimum bow height, required by SOLAS
Trim by stern
Sufficient propeller immersion and a comfortable GM
When there is a need to interupt current flow in a high voltage system it may be very difficult to quench the electrical arc which is generated at the circuit breaker contacts. Which of the following arcing media is commonly found in high voltage marine switchgear?
Vacuum
Air
Water
Oil
What are the main elements in a damage control plan?
Instructions and procedures for reporting damage to the Company
Boundaries of the watertight compartments for decks and holds. Position of controls for opening and closing of watertight compartments. Arrangement for correction of list due to flooding.
Arrangements for correction of list due to flooding within 15 minutes
A damage control plan is the same as an emergency plan
Is there any requirements regarding crew’s language skills?
All crew working directly with passengers must be able to communicate on the language spoken by the majority of the passenger.
Yes, all crew must be able to communicate on the language spoken by the majority of the passengers, or demands set by the company.
All crew working directly with passengers must be able to communicate on the language spoken by the majority of the passenger and english.
All crew must be able to speak english
The purpose of the surface blow valve is to
Remove any oil or scum on water surface
Remove air from feed-water
All alternatives
Remove sludge and scale from boiler tubes
What should be done in preparation for loading cold rolled steel sheets in bulk carriers?
8mm wire cables should be laid athwartships over the tank top spaced 5m apart
Dunnage should be laid athwartships over the tank top
Dunnage should be laid fore and aft over the tank top
16mm wire cables should be laid fore and aft over the tank top spaced 3m apart
What do iron ore, flourspar, fishmeal, lead concentrate and cement copper have in common?
These are cargoes that may liquefy
These cargoes are liable to shift when dry
The cargoes are not listed in the BC Code
Residues to these cargoes are governed by MARPOL 73/78
A conventional reefer vessel is fitted with hydraulically operated hatches in the 'tween decks. Complete the following statement from the options given. "Careful maintenance of the hydraulic system is important….
..to ensure that the lids can be opened fully and secured.
..to ensure that the hatch lids operate at the correct speed.
..to ensure that there are no oil leaks which may contaminate the cargo.
..to ensure that the planned maintenance system is up to date.
A centrifugal pump gland has been repacked following overhaul of the pump. Which of the procedures given in the options is the correct method to ensure the pump shaft does not overheat when the pump is operating?
Tighten the gland to half way travel of the gland follower.
Tighten the gland follower as much as possible and then slacken it back again by one turn of the gland nuts.
Gradually tighten the gland follower with the pump running until leakage at the gland stops.
Gradually tighten the gland follower with the pump running until the leakage is just a small steady flow.
Who is responsible for maintaining the vessel's structural strenght?
The Shipping Company and the Classification Society
The Shipyard
The Master
The Flag State Administration
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.
What basic information do we get from the pump system curve?
We get information about the pump's liquid flow.
We get information about the pump's ampere, delivery pressure and suction height.
We get information about the pump's lifting height and lifting flow.
We get information about the pump's suction height and liquid flow.
What is the main purpose of routine testing of cooling water?
To ensure that the proper residuals of treatment chemicals, as specified, are maintained at all times
To detect dissolved oxygen in the water
To measure the pH - value of the water
To detect presence of contaminants in the water
Which is the "AFT BREAST LINE", in the figure?
The Aft Breast Line is B, in the figure
The Aft Breast Line is C, in the figure
The Aft Breast Line is D, in the figure
The Aft Breast Line is A, in the figure
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 action should be taken by the watchkeeping engineer if the running machinery is operating at slightly high temperature but everything else appears ok?
It should be stopped and serviced immediately
It should be left running until the fault develops further.
It should be shutdown temporarily, allowed to cool down and then be restarted.
It should be brought to the attention of the Chief Engineer so that remedial action can be decided upon.
What is ‘Standardized Cargo’?
Palletised cargo
Cargo for which the ship is provided with an approved securing system
Cargo that is shipped in standard dimensions
Breakbulk cargo
Why should the coil of an ac solenoid valve not be energised when demounted from the valve body?
The coil will lose it's residual magnetism
The coil will jump around.
The coil will fail due to vibration.
The coil will overheat.
The thermal conductance capability is expressed by a materials thermal conductance number and states the heat quantity. What is the denomination for heat quantity?
Enthalpy.
Joule.
Calorific value.
Watt.
A large 2 stroke engine is normally controlled from the bridge during manoeuvring. In this type of automated control for the starting system what would normally cause the 'Engine Failed to Start' alarm to be activated and to lockout starting from the bridge?
A single failed start attempt.
Low start air pressure irrespective of the number of failed start attempts.
3 failed start attempts.
3 failed start attempts if the start air pressure had fallen to less than a set value.
What is the purpose of the accumulation test required by Classification Societies for boiler safety valves before the valves can be approved?
To check the pressure at which the safety valve will reset.
To check that the valves have sufficient discharge capacity when operating to limit the build up of pressure when the boiler is on full firing rate.
To check how high the boiler pressure will go before the safety valve operates.
To check that the maximum firing rate can raise the pressure above normal working pressure.
The temperature control for the central cooling system low temperature circuit has failed and a new 3 term controller is to be fitted. Which of the given options would be the correct method of setting up the controller?
Set the derivative action first.
All three actions should be set simultaneously.
Set the proportional action first.
Set the integral action first.
Which of the following cuts of beef is taken from the shoulder?
Rump
Brisket
Chuck
Silverside
A positive displacement, rotary type, volumetric flow meter reads low with an error reading of 1% when used to measure flow of heavy oil and 2.5% when used to measure the flow of diesel oil. From the options given select the most likely cause of this difference in error?
The lower mass of diesel oil results in a lower reading.
The higher viscosity of the heavy oil is slowing down the rotary element in the meter.
The low lubricity of the diesel oil is increasing the friction in the rotating element and slowing the rotor down.
The meter is worn internally.
In the figure, which letter indicates the "BREADTH” of the vessel?
Breadth is indicated by B, in the figure
Breadth is indicated by A, in the figure
Breadth is indicated by C, in the figure
Breadth is indicated by D, in the figure
What must be ensured when using ship’s cargo gear in hot climates?
That all cargo gear is appropriately marked
That grease from wire falls does not fall onto cargoes being loaded or discharged
That the cargo gear register in up to date
That stevedores handle cargo gear in the proper manner
What is the IMO recommended allowance for water absorbtion in timber deck cargoes on a General Cargo Vessel ?
5% additional weight should be used in stability calculation for the arrival condition
No additional weight allowance is normally made
15% additional weight should be used in stability calculation for the arrival condition
25% additional weight should be used in stability calculation for the arrival condition
Which of the tools given in the options is the best one to select for cutting a new external thread on the end of a steel pipe?
Die nut.
Thread chaser.
Tap.
Split dies.
The holding down arrangement for a large 2-stroke diesel engine consists of steel chocks and hydraulically tightened holding down bolts. When carrying out routine maintenance of the arrangement which method, from those given in the options, should be adopted to check that it is in good order.
Measure the length of the holding down bolts to make sure they have the correct extension for the recommended tension.
Tap the holding down bolts with a hammer to see if they 'ring'.
Tap the steel chocks with a hammer to see if they move.
Check the hydraulic release pressure for the holding down bolts.
To correctly interpret the readings on the printout from a reefer vessel’s cargo data logger it is essential to have some knowledge of the location of the temperature sensors. Where would the temperature sensor for the delivery air to a cargo hold be expected to be located?
Just above the cooling coils where the air returns from the cargo space.
In the air flow path from the cooling coils, about 3 metres from the coils.
In the air flow path from the cooling coils, but at the opposite end of the cargo space to the coils.
Near the centre of the cargo space.
What is the main reason for crewmembers to practice search and rescue operations on ships in an emergency?
Passengers may not hear the alarm bells, and they may not know that they should proceed to mustering stations.
Passengers seek safety in mustering stations, or other common areas, where they think they can escape danger.
Passengers seek safety in their cabins, or in other places onboard, where they think they can escape danger.
Passengers may not hear the public address system, and they may not know that they should proceed to mustering stations.
What kind of information do we get from a Mollier diagram?
We get information about enthalpy, specific volume of liquid, liquid/ vapour mixture, temperature of vapour when pressure is known, pressure in cargo tank when the liquid temperature is known etc.
We get information about enthalpy, liquid/ vapour mixture, temperature of vapour when pressure is known etc.
We get information about enthalpy, specific volume of vapour, liquid/ vapour mixture, temperature of vapour when pressure is known etc.
Most fuel oil separtors working on the centrifuge principle have an automatic start up and sludging facility. Which of the following actions would you expect to occur first during the start up sequence?
Sealing water supplied to bowl to prevent carry over.
Operating water drained from bowl to open it.
Operating water supplied to bowl to close it
Fuel oil supplied to bowl to fill it.
As per SOLAS requirement fast rescue boats shall be constructed in such a way that:
They will not capsize
They are self righting
They are self righting or capable of being readily righted by its crew
They can be righted by 5 persons
What general background colour is used on warning signs that indicate emergency or first-aid features, or indicate a safe condition?
Blue.
Green.
Yellow.
Red.
A walk-in refrigerator has been out of use for several weeks and needs cleaning. It has been closed for a long time because there is a suspicion that there may be a small gas leak from the cooling system. What should you do?
Hold your breath as you enter, locate the gas leak and stick a bit of tape over it.
Seek advice from ther ship's safety officer who will perform a risk assessment and advise on any precautions necessary.
Nothing special - it's only a refrigerator and everything will be OK.
Get someone to come inside the refrigerator with you.
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
What is the delivery pressure of a centrifugal pump dependent on?
The liquid-s density and delivery head.
The pipe resistance.
The net delivery heads.
The NPSH (Net positive suction head).
What do you understand by: Secure the tug?
Secure the tug means: to pass a line to the tug
Secure the tug means: to let go the tug
Secure the tug means: to make fast the tug
Secure the tug means: to pick up the tug line
Clay slurry, coal slurry, dextrose solution and molasses. In which MARPOL product category are these substances classified under the revision that came into effect on 1st January 2007?
"Y"
"Z"
"OS" (Other substances)
"X"
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.
Explain the difference between absolute pressure and manometer pressure.
Absolute pressure is atmospheric pressure multiplied with manometer pressure, to be used in technical tables
Absolute pressure is atmospheric pressure minus manometer pressure, to be used in technical tables
Absolute pressure is equal to manometer pressure and must be used in technical tables
Absolute pressure is atmospheric pressure added with manometer pressure, to be used in technical tables
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.
Where on a ship is the deck known as the "Boat Deck"?
The Boat Deck is the name of the main deck of the ship or boat.
The Boat Deck is the deck where access would be made from any boats alongside.
The Boat Deck is the deck from which persons embark into the lifeboats
The Boat Deck is the deck of a life boat
If you are the helmsman on duty, what would be the correct action if the OOW (officer on watch) gives you the order to: "Change over from Automatic pilot to Hand steering".
Standby the wheel and wait for the OOW to apply the appropriate controls to change from Automatic pilot to hand steering
Apply the controls to disconnect the Automatic pilot and engage hand steering. Start steering the vessel using the wheel and confirm with the OOW the change-over is complete and the course you are to steer
Apply the appropriate controls to disconnect the Automatic pilot and engage hand steering. Start manually steering the same course as was being steered by the automatic pilot.
Ask the OOW what course you are to steer and standby the wheel. Tell the OOW you are ready for changing over.
What is name of the machine shown, used to heave on the ropes during mooring and unmooring?
Winch
Crane
Windlass
Capstan
What is the requirement to membranes on Independent Tank Type "A"?
No barrier required.
Complete secondary barrier.
Only primary barrier required.
Partial secondary barrier.
How often shall drills for the operation of watertight doors, side scuttles, valves and closing mechanism of scuppers, ash-chutes and rubbish chutes take place in passenger ships?
Every month
Weekly
Every two weeks
Daily
On a RoRo vessel, what should be used to secure cars with aluminium tyre rims?
8mm diameter steel wire rope
Steel chains
Wooden wheel chocks only
A car sling
During overhaul of a hydraulic pump a large number of small components are removed. Where should these components be kept so that they are not lost and are available when rebuilding the pump?
They should be kept in a boiler suit pocket.
They should be placed in the pump save all.
They should be placed in a clean box or tin and covered over.
They should be placed inside the pump casing.
In the diagram, which letter is pointing to the area of the ship known as the "STERN"?
The Stern area is indicated by A, in the figure
The Stern area is indicated by D, in the figure
The Stern area is indicated by C, in the figure
The Stern area is indicated by B, in the figure
What must be ensured prior to opening side-rolling hatch covers of a bulk carrier?
Hatch rollers are turning freely
Cross wedges have been removed
The wheels should have been raised up to the wheel track
Pot lifts are working
To which of the following are the Hague-Visby rules applicable?
Carriage of animals/livestock
Charter parties incorporating a Clause Paramount
Cargoes stated as being carried on deck
Contracts of carriage not evidenced by a bill of lading
At what temperature should the meat and fish freezers be maintained?
- 20° C
- 25° C
- 30° C
- 10° C
What is the main reason that LPG boil-off gas is unsuitable for use in the vessel's fuel supply?
LPG vapour is heavier than air at atmospheric conditions and represent a risk as they may accumulate in machinery spaces.
LPG vapour is too difficult to ignite.
Reliquefaction of LPG vapour is a simple process and is a cheaper option than burning the boil-off gas in the boiler.
LPG is too expensive to use as fuel.
All cargo hatch covers on a bulk carrier are to be hose tested in the presence of a surveyor, prior to loading a cargo of steel coils; what should be done to the hatch covers before the test?
Hatch covers in open position
Hatch cover to be lowered by jacks onto seals but not secured
Hatch cover in normal port condition ready to open
Fully secured to a sea- going condition with all side cleats ( if any) fitted
The internal e.m.f. generated in the phase windings of a lightly loaded a.c. generator is controlled by:
The prime mover speed and excitation current.
The internal volt drop and the load current.
The internal volt drop and the residual magnetism.
The prime mover and load current.
What does this flag mean?
My vessel is stopped and making no way through the water.
Yes (affirmative).
I wish to communicate with you.
I have a diver down; keep well clear at slow speed.
The best way to ensure you get the equipment you need is to:
Buy what everyone else is buying.
Determine your needs and do some research.
Buy the most expensive equipment on the market.
Buy the newest models.
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.
What would be the effect of a faulty steam trap on a fuel oil heater causing condensate to build up in the heater exchanger?
An increase in fuel oil temperature.
Low water level in the boiler.
Reduced heating capacity of the heater.
Excess pressure on the shell of the heat exchanger.
What is defined as ‘grain’, under international regulations?
Granulated slag
Pulses, oats and seeds
Seed cake
Raw sugar
Which of the following has the highest fat content?
Sardines
Rainbow trout
Hake
Plaice
This circuit is a logic gate with two input signals, A and B, and one output signal Q. Which type of logic function is the gate giving?
OR gate
AND gate
NAND gate
NOR gate
Why are accommodation spaces separated from the remainder of the ship by thermal and structural boundaries?
Don't know
To increase effectiveness of the air-conditioning in the accommodation
To provide means of escape for the passenger and crew
So that passengers can stay in the accommodation in case of fire in the engine room
On a container vessel why is it important not to exceed stack allowable weights?
The lashings can be overloaded
The GM can become excessive leading to high roll accelerations
Torsional effects on the hull
It can cause failure of the corner posts of the containers stowed at the bottom of the stack
During cargo or bunker operations, oil response equipment is to be:
Used elsewhere in the ship
In its store room
Ready for immediate use
In the cargo pump room
Which of the cargoes given in the options would you expect to be most suited for loading onto a conventional reefer vessel designed with side loading doors?
Frozen tuna.
Break bulk bananas.
Frozen lamb carcasses.
Palletized fruit.
When loading a static accumulator oil, which of the following is a standard precaution applied to eliminate the risk of explosion through electrostatic charge in the tank?
No metallic sampling devices over 2 litres capacity should be permitted on the cargo deck at any time, unless thoroughly cleaned beforehand with soapy water
No metallic devices, such as those used for gauging and sampling, should be introduced into the tank during loading and for 30 minutes after completion of loading
No rubber containers over 1 litre capacity, such as those used for sampling, should be introduced into the tank between completion of loading and for 10 minutes after that time
No plastic, or plastic coated devices, such as those used for sampling or gauging, should be introduced into the tank unless bonded, at any time
Why should containers containing scrap metal be stowed under deck or in high on-deck stowage positions?
Because of separation requirements under the IMDG Code
To avoid contact with seawater
Because of shippers’ requirements
Because of segregation requirements under the IMDG Code
What is the most suitable type of packing for a shaft gland of a pump used for seawater duties?
Greasy cotton packing.
Mica impregnated cotton packing.
PTFE rope packing.
Lead covered hemp packing.
Passenger ships shall either carry automatically self-righting liferafts or canopied reversible liferafts. What does it mean that a liferaft is automatically self-righting?
The liferaft will automatically turn back into an upright position when it is empty of people
One person can manage to turn the liferaft back into an upright position
The liferaft will automatically turn back into an upright position when it is fully loaded with people
It means the same as self-righting lifeboats
If the carriage of a new Noxious Liquid Substance not yet listed in the IBC Code is considered, this may be achieved through a "tri-partite" agreement. Who must this agreement be between?
The Port State of the Shipper / the Flag State of the Carrier / the Port State of the Receiver.
The Flag State of the Shipper / the Flag State of the Charterer / the Flag State of the Receiver.
The IMO / the Port State of the Shipper / the Port State of the Receiver.
The Shipper / the Receiver / the Operator or Charterer.
For a Nitrate based cooling water treatment system, what would you consider to be the normal operating limits?
0-1000 PPM Nitrate.
3000-5000 PPM Nitrate.
1000-2000 PPM Nitrate.
2000-3000 PPM Nitrate.
How much food per person is supplied in a lifeboat?
Not less than 20000 kJ
None - only barley sugar sweets supplied
Not less than 10000 kJ
Not less than 5000 kJ
Ce test en ligne se compose de 90 questions aléatoires issues des tests CES 5.1 sur un sujet de votre choix.