Heim Online-Tests CES Dry cargo 2nd-Off / 3rd-Off Test online CES 5.1 for 2nd-Off / 3rd-Off, Dry cargo vessel

Online-Test: Test online CES 5.1 for 2nd-Off / 3rd-Off, Dry cargo vessel

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Frage 1 aus 90

Fire protected lifeboats when waterborne should be capable of protecting its full complement when subjected to a continuous oil fire that envelops the boat for a period of not less than how many minutes?

10 minutes

15 minutes

8 minutes

20 minutes

The operating mode of a pyrotechnic signal depends essentially on:

Instructions or diagrams printed on its casing by the manufacturer

The fact that the user is on board a liferaft, a lifeboat or ship

The weather conditions of the moment

A definite standard process

What is the minimum number of portable fire extinguishers that must be carried on ships of 1000 GRT and above?

*In case each hydrant is not fitted with hose and nozzles, what is the requirement ?

Hoses with fixed nozzles must be kept ready for use in conspicuous positions near the hydrants

There must be a complete interchangeability of hose couplings and nozzles

Hoses and nozzles for each hydrant must be available at the fire stations

At each fire station, sufficient number of hoses with nozzles for the hydrants in the area shall be available

Inmarsat Telex Service code ‘31’ can be used:

to ask for ‘maritime inquiries

when the coast-station is disfunctional

when technical problems are experienced with the Inmarsat terminal

Don't know

Who has the right, in addition to the issuing authority, to inspect the ship and control the validity of the ship's Safety Certificates in foreign ports?

Inspectors from the International Maritime Organization (IMO)

Port Authority Inspectors

Inspectors duly authorized by the port state government authorities

Duly authorized Classification Association inspectors

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 rhythm when performing M-T-M in combination with ECC with one First Aider only ?

15 compressions followed by 2 full ventilations.

5 compressions followed by 5 full ventilations.

20 compressions followed by 5 full ventilations

10 compressions followed by 3 full ventilations

What does the abbreviation ABC mean in first aid?

Air, Breathing, Circulation.

Abandon, Balance, Circulation.

Air, Breath, Concentration.

Air, Burning, Critic.

What is the result of a "high metacentric height"?

The vessel will roll violently?

The vessel will roll slowly or be unstable?

The vessel will have a great bending moment?

The vessel-s tweendeck heights is too high?

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.

You are to release the towing wire with forerunner. You have 3 men with you to do the work. How would you safely carry this out?

With manpower. Two men picking up slack and one man lifts off the eye and let go simultaneously

Use the winch. Forerunner and wire stopper to pick up the slack and stop the wire. One man operating each. Make the forerunner fast on the bit, releasing the eye of wire and the stopper, lower the wire easy by forerunner

Use the winch and forerunner to pick up slack. One man to release the eye, lowering the wire down by use of winch

After heaving on the wire by a forerunner, cut the forerunner and so let the wire free

In an extreme case, in addition to having your winch brakes as tight as can be, you can increase the brake holding capacity of the winch drum by putting it in gear and setting the power to the 'heave' position. However this may cause:

Damage to the winch by distorting the shaft

Strain on the fairleads and rollers in use in excess of their Safe Working Load

The increased braking power of the winch to exceed the breaking strength of the wire and rope paid out from it which might cause the wire or rope to part

All the listed alternatives

In maritime radio-communication by “low power” given by a nautical phone is meant a transmitting power of:

1,0 – 1,5 watt

Don't know

O,5 watt maximum

0,5 – 1,0 watt

Give the meaning of the following symbol:

child-s lifejacket

muster station for unaccompanied minors (UM)

lifejacket

immersion suit

The lifebuoy making part of quick-release arrangement must have a weight of at least:

2.5 kg

4 kg

2 kg

8 kg

Which item among those below is included in the normal equipment of every lifeboat ?

an EPIRB

sea-charts and navigating equipment

two hatchets

one life-jacket for each person

Which of the following detailed explanations should be mentioned in the Training Manual ?

The use of navigational equipment for survival crafts

The methods of retrieval

The use of escape routes and other escape methods

The use of surface to air visual signals to be used by survivors

Which one of the listed requirements regarding abandon ship drills corresponds to present SOLAS regulation?

Drills shall be conducted when the ship is in a harbour.

All lifeboats shall be lowered during drills.

On ships on short international voyages, each lifeboat shall be launched and manoeuvred in the water at least every six months.

Each lifeboat shall be launched with its assigned crew, and manoeuvred in the water at least once every three months during an abandon ship drill.

The training manual shall contain instructions and information in easily understood terms and illustrated wherever possible. Which one of the following objects do not have to be explained in detail in the manual according to present regulations?

The use of onboard communication systems

The use of engines and accessories (lifeboats/rescue boats)

With assistance of illustrations, the use of radio life-saving appliances

The use of drogues

What is minimum equipment needed for entering a tank or void space that is not gas free or does not contain sufficient oxygen?

Good quality face mask and a safety line.

Coverall and safety shoes.

Self contained breathing apparatus in addition to normal safety equipment.

Spark proof torch.

When there is doubt about the freshness of the atmosphere in enclosed or confined spaces, what action should be taken?

Ro-ro decks are always ventilated in advance of an operation

Open both bow- and stern doors

Arrangements should be made for testing of the atmosphere to ensure maintenance of 21% oxygen and a carbon monoxide content below 50 ppm in the atmosphere of the space

Supply filter masks to all crew working on ro-ro deck

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.

What should be clearly marked on the cowl ventilators of a General Cargo Vessel?

A serial number

The date when last painted

The Open and Closed positions with the last date of testing

The last internal inspection date

A deep tank on a General Cargo ship has been cleaned after discharge of palm oil; what needs to be done to prepare the space for dry cargo?

Ladders checked, CO2 lines closed and temperature probes removed

Suction line blanked off, heating coils fitted and bilge system closed off

Heating coils removed, bilge suctions and CO2 lines opened and tested

Ballast lines opened up, ladders removed and air vents closed

What is the description for a sidelight, as shown in rule 21 of the International Regulations for Preventing Collisions at Sea?

A green light on the starboard side and red light on the port side, showing an unbroken light over an arc of 135 degrees, from right ahead to 22.5 degrees abaft the beam on the respective side.

A green light on the starboard side and red light on the port side, showing an unbroken light over an arc of 112.5 degree, from right ahead to 22.5 degrees abaft the beam on the respective side.

A red, green or yellow lantern, showing an unbroken light over an arc of 112.5 degrees.

A red light or a green light, with a minimum range, in a vessel of 50 metres or more, of 3 miles. In a vessel of 10 metres or more but less than 50 metres in length, a range of 1 mile.

What are the three volumes of the IAMSAR Manual?

I Organization and Management II Mission Co-ordination III Mobile Facilities.

I Planning and Preparation II Rescue Control III Reference

A Command and Control B Communications C Rescue Procedures

I Organization II Communications III Rescue Procedures

What should be done if cracks are found on portable deck supports?

Disallow vehicles from passing over the portable deck

Inform the master

Inform the stevedoring foreman

Stop cargo operations and inform the master

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

Before leaving the machinery spaces of a UMS vessel whose engine room is protected by a fixed CO2 installation, should the duty engineer:

Ensure all doors are in closed position.

Lock all of the entry exit doors to prevent entry by unauthorised personnel.

Hook the main entry/exit doors in the open position to speed up entry in the event of an alarm.

Leave the doors in whatever position they are in.

What initial simple action can be taken to reduce the oxygen content of boiler water?

Increase the blowdown.

Increase the boiler pressure.

Raise the feed water temperature.

Lower the feed water temperature.

What type of Bill of Lading covers "door to door" shipment?

A Destination Bill of Lading.

A Through Bill of Lading.

A Multi-Phase Bill of Lading.

An Ocean Bill of Lading.

Parallel sweep search in a co-ordinated manner is achieved when?

All facilities proceed with minimum safe speed

All facilities proceed with same speed

All facilities proceed with maximum safe speed

All facilities proceed with different speed

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 sort of information must an inhibitor certificate contain?

Inhibitor name, number of cargo tanks inhibited, duration of effectiveness of inhibitor, expected duration of sea voyage and temperature limitation qualifying the lifetime of the inhibitor

Inhibitor name, number of cargo tanks inhibited, duration of effectiveness of inhibitor, expected duration of sea voyage and date the cargo tanks are inhibited

Inhibitor name, date inhibited and expire date of the inhibitor

Inhibitor name, concentration of inhibitor, duration of effectiveness of inhibitor, expected duration of sea voyage, temperature limitation qualifying the lifetime of the inhibitor and number of cargo tanks inhibited

On what criteria is the Threshold Limit Value (TWA) based?

The maximum concentration of a vapour to which a worker may be repeatedly exposed for a maximum of 12 hours per day, 5 days per week without serious health effects.

The concentration of a vapour expressed as a percentage of the oxygen content of an environment in which a fit human-being can work continuously for a period of 8 hours.

The time-weighted concentration of a substance to which a worker may be repeatedly exposed for a normal 8 hour working day and 40 hour week without adverse health effects.

The maximum concentration of harmful vapour to which a worker may be exposed for a period of 15 minutes up to 4 times within any 24 hour period without adverse respiratory effects.

When refitting the bolts into a flange on a steam line how should the bolts be prepared so that they can be easily removed next time maintenance is required?

Coat the threads in graphite based grease.

Fit the bolts dry with a spring washer.

Apply thread tape to the bolt threads.

Coat the threads in general purpose grease.

Under what circumstances would you remove guards and safety devices from machinery?

To allow the shaft to be seen to confirm the machine is running.

When they are rattling and vibrating.

When the safety devices keep stopping the machinery

During overhaul and maintenance procedures.

A crosshead pin for a large bore 2-stroke diesel engine has to be refurbished following bearing failure. The surface finish required is measured as a centre line average, CLA. Select, from the options given, the standard of finish that should be achieved during the refurbishment.

2.5 micron CLA

1micron CLA

5 micron CLA

10 micron CLA

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

Which symptoms would indicate piston blow-by when operating a 4 stroke trunk piston type engine ?

Increased pressure in the air inlet manifold.

Increased pressure in the crankcase and smoke at the crankcase vent.

Smoke and sparks from the scavenge manifold drains..

Increased temperature in the inlet air manifold on the engine.

What temperature defines "hot" water in the context of tank washing on a chemical tanker?

A minimum of 10 degrees Celsius above the discharge temperature of the cargo.

At least 40 degrees Celsius.

At least 60 degrees Celsius.

At least 70 degrees Celsius.

The figure shows a cross section through a ship floating in water, with the hull in red and the seabed below the ship shaded. On the figure there are four (4) possible definitions of the term "FREEBOARD" given. Which one is the correct one?

Freeboard is given by B on the figure

Freeboard is given by C on the figure

Freeboard is given by A on the figure

Freeboard is given by D on the figure

What is the minimum number of ”Firemen’s outfit” on gas tanker, above 5,000 m3, carrying flammable products?

2 sets of Firemen’s outfits

4 sets of Firemen’s outfits

3 sets of Firemen’s outfits

5 sets of Firemen’s outfits

How would you ventilate your cargo holds when sailing from cold climate to hot climate?

No ventilation should be done?

Ventilate at intervals during the night?

Ventilate at intervals during the day?

Ventilate excessively?

When calibrating an pressure transducer we have to adjust both SPAN and ZERO. Please indicate in which order these adjustments should be done.

The order of adjustment is of no importance.

First Span adjustment and then Zero adjustment. After that Span setting should be checked gain.

First Span adjustment and then Zero adjustment. After that Span setting should be checked again.

First Zero adjustment and the Span adjustment. Then Zero should be rechecked.

The image shows an indicator diagram taken from a diesel engine cylinder . Which of the following options is the action most likely to identify the fault.?

Check if the fuel pump injection is too early, or fuel pump lead is too great, for that cylinder.

Check the exhaust valve.

Check that the fuel temperature and viscosity are correct.

Check if the fuel injection valve is partly blocked.

The main engine is running steady. What is the normal shut down pressure for "Lub.oil inlet to main bearings"?

0,5 Bar

0,2 Bar

2,0 Bar

1,0 Bar

Maintenance of lifeboats and davit arrangements is routine work onboard. Why should you not carry out this type of work alone?

There might be a risk of falling even though harness and lifeline is used. A second person should always stand by to assist with tools etc. and other practical arrangements.

If you need something to drink, the second person can get it for you

It is boring to work alone and you should be able to chat with colleagues while working

If the person working on the lifeboat falls over board, the second person can lower the lifeboat and prepare pick-up immediately

How can you avoid and/or reduce potential panic among passengers, if an emergency situation occurs?

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.

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.

Checking that all crew and passenger are present

When a changeover from HFO to diesel oil is going to take place, we want this to be carried out as follows:

as fast as possible to save HFO.

as fast as possible to save steam.

slow to get slow cooling.

as quick as possible, to obtain a fast temperature reduction to cool the HP fuelpumps.

When conducting a risk assessment for a shipboard work activity, what are the two elements to be considered?

The chance of an incident re-occuring and the potential effects of an loss.

The available manpower and their experience in this type of work.

The potential severity of harm and the likelihood that harm will occur.

The time available to complete the task and the resources to hand.

You have just completed your tank cleaning programme for a set of tanks that previously contained Toluene. What will the main hazard be when you enter the tanks for mopping and inspection?

The lower part of the tank may still be wet and slippery. You may not be able to see this from the deck.

The atmosphere inside may contain insufficient oxygen to support life, or toxic vapours, or both.

There will commonly be insufficient natural light to safely descend the access ladder.

That there may hydrocarbons present on the bulkheads.

A General Cargo vessel develops an angle of loll while loading a heavy item of deck cargo alongside; what is the action to be taken ?

Stop cargo, increase FSE in tanks, lower weights within vessel and fill small ballast tank on high side of vessel

Stop cargo, reduce FSE in tanks, lower weights within vessel and fill small ballast tank on high side of vessel

Stop cargo, increase FSE in tanks, lower weights within vessel and empty small ballast tank on low side of vessel

Stop cargo, reduce FSE in tanks, lower weights within vessel and fill small ballast tank on low side of vessel

What is the purpose of an observation tank in a boiler feed system?

To check condensate returns for oil.

For adding chemicals into the boiler water.

To monitor chloride level.

To monitor the water colour.

A non-reversing medium speed diesel engine is used to drive a controllable pitch propeller through a pneumatic clutch and reduction gearbox. The engine has been tested and brought up to operating temperatures on engine control. Which of the options given would be the preferred status of the engine and associated equipment when it is handed over to bridge control?

Engine stopped with clutch disengaged and propeller in zero thrust position.

Engine running, clutch disengaged, propeller at zero thrust.

Engine running with clutch engaged and propeller in ahead position.

Engine stopped with clutch disengaged and propeller at zero thrust.

Which of the following cargoes would normally require surrounding empty cargo tanks, void spaces and ballast tanks to be inerted prior to loading and maintained in that condition while the cargo was on board?

Propylene Glycol.

Propionic Anhydride.

Propylbenzene.

Propylene Oxide.

How can the effects of ‘lateral drag’ be reduced when loading heavy machinery?

By using a shore crane

By a quick loading operation

By listing the vessel to counter the loading operation

By a controlled and very slow loading operation

What type of bomb search should you conduct to avoid panic when the credibility of the threat is in doubt and you don’t want to disrupt ship business?

Nominated officers search

External search team

Known hiding spot search

Crew search

"Protective discrimination" means the progressive grading of sizes or tripping times of:

Generators and motors.

Line fuses and overcurrent relays

Magnetic and thermal current transformers.

440 V and 220 V transformers.

In which locations will Ro-Ro units be stained when a vessel is at sea?

Units stowed on ramp slopes

Units stowed near watertight doors

Units stowed in way of fan duct exits

Units stowed near gas tight doors

A vessel’s aft draught reading is 8.50m with a correction factor of 0.065m; the aft draught marks are painted forward of the after perpendicular. What is the corrected aft draught if the vessel is trimmed by the stern?

8.63m

8.565m

8.37m

8.435m

There are a number of liquefied gases transported by sea. What is the most common component of these liquefied gases?

A mixture of natural gas liquids (NGLs).

A mixture of chlorine and ammonia.

A mixture of hydrocarbon gases.

A mixture of non-hydrocarbon chemical gases.

What is the Chief Officer worried about?

The Chief Officer is worried that that oil will leak out before the ship is moored

The Chief Officer is worried that oil will run through the overboard valves, into the sea

The Chief Officer is worried that oil will be pumped into the sea

The Chief Officer is worried that that the cadet will not adjust the moorings properly

Which of the International Maritime Organisation (IMO) Codes contains information regarding the Construction and Equipment of Ships carrying Liquefied Gas in Bulk?

In the IBC Code.

In the IGC Code.

In the IMSBC Code.

In the IMDG Code.

The pressure control of a vessel's domestic water system, which includes a hydrophore tank pressurised by air, is achieved by stop/start of the fresh water pumps using pressure switches. How should the system be prepared for first use to give correct operation of the pressure control?

Fill the hydrophore tank to approximately 75% full with water and then pressurise with air up to the pump cut out point.

Fill the hydrophore tank up with freshwater allowing it to compress the air already in the tank and then adjust the pump cut out to match the pressure in the tank when it is almost full.

Pressurise the hydrophore tank with air to approximately 50% of the pump cut out pressure and then allow the pump to fill the tank until it cuts out.

Fill the hydrophore tank completely with water and then pressurise with air up to the pump cut out point.

Which of these will not physically damage a bulk carriers’ plating, frames and brackets?

Hydraulic hammers

Grabs

Bulldozers

Evacuators

Why should a surveyor be in attendance when discharging steel rebars from a General Cargo Vessel?

In case cargo is found damaged during cargo discharge operations

Because individual rebars will be inter-twined with those below them and will therefore be discharged in damaged condition

Because of charterers? requirements

Because it is a P. & I. Club requirement

When starting three phase induction motors there is sometimes a need to use a star-delta starter. A star-delta starter exhibits which of the following characteristics while connected in star.

Reduced current and increased voltage

Reduced current and reduced torque

Reduced current and reduced voltage

Increased current and power

Which of these is not a Cargo Transport Unit under the IMDG Code?

Road tank vehicle

Pallet

Portable tank

Freight container

Which of the following statements is incorrect with regard to preparing the cargo holds for receiving bagged cargoes?

Cargo holds should be free of infestation

Dunnage is not required

Cargo holds should be clean

Cargo holds should be free of cargo residues

The lubricating oil on the exhaust side of the turbine blower gets very dirty after only a few hours in service. What can the reason be?

Worn out bearing turbine side.

Exhaust gas leaking into the oil chamber.

Wrong type of oil used.

Lubricating oil is mixed with salt water.

What is the SOLAS definition of deadweight?

Deadweight is the difference in tonnes between the displacement of a ship in water of specific gravity 1.025 and the load waterline corresponding to the assigned winter freeboard and the lightweight of the ship

Deadweight is the difference in tonnes between the displacement of a ship in water of specific gravity 1.000 and the load waterline corresponding to the assigned summer freeboard and the lightweight of the ship

Deadweight is the difference, in tonnes, between the displacement of a ship in water of specific gravity 1.025 and the load waterline corresponding to the assigned summer freeboard and the lightweight of the ship

Deadweight is the difference in tonnes between the displacement of a ship at its light and sea-going freeboards

What is the purpose of a draught survey on a bulk carrier?

To calculate the vessels lightship displacement

To calculate the vessels constant

To calculate shear forces at the bulkheads

To calculate the quantity of bulk cargo loaded or discharged

What is a Marine Evacuation System?

Helicopter evacuation

Assistance from other ships

Evacuation Chute(s)/Slide(s) and Liferafts

Liferafts supported by Fast Rescue Boats and Lifeboats

For what purpose do we have booster pumps on the cargo discharge line?

To increase discharge rate.

To reduce the flow and pressure to shore line.

To increase discharge pressure and reduce the cargo temperature.

To increase discharge discharge line pressure above shore back pressure.

What is the correct name of the part highlighted in the sketch?

Exhaust valve

Air inlet valve

Cylinder relief valve

Cylinder head

Which Security Levels requires the highest security alert?

Security Level 2

Security Level 1

Security Level 3

A galley hot plate uses a Nichrome / Magnesium Oxide heating element and is to be tested before being put into service for the first time. An insulation resistance test yields a reading of 0.3 M Ohm. Which action should be taken?

Wash the element in a degreasing agent. Then retest and if ok put it into service.

Put the element into service.

Discard the element.

Apply reduced voltage to the element for a few minutes. Then retest and if ok put into service.

In a non-verbal demonstration, which action provides good communication?

Do the procedure as you would without an audience.

Avoid eye contact.

Exaggerate your movements.

Do not say the instructions verbally.

What name is given to the pickled, fermented vegetable condiment that accompanies almost every Korean dish?

Korchee.

Kebchee.

Kalachie.

Kimchee.

When starting three phase induction motors which of the following starting methods will immediately apply rated voltage to the machine?

Soft starter

Star Delta

Direct on Line

Auto - transformer

What is the definitive document which confirms whether a chemical tanker is authorised to carry a particular Noxious Liquid Substance?

Her Certificate of Fitness.

The International Pollution Prevention Certificate for the Carriage of Noxious Liquid Substances in Bulk.

The IBC Code.

MARPOL.

What will you do if you are helmsman and the OOW (officer on watch) gives you the order: “Port 20” and after a while the order: "Ease to 10"?

Turn the wheel until the rate of swing of the ship is 20 degrees per minute and then after the second order, reduce the wheel to make it swing at only 10 degrees per minute

Change the compass course to a new heading which is 20 degrees to port of original heading and then after the second command reduce it to only 10 degrees to port of original heading

Apply the wheel to alter the course 20 degrees to port and then after the second command change the heading a further 10 degrees

Apply 20 degrees of rudder towards port and then after the second command reduce the wheel to 10 degrees.

Why should vehicles stowed on ramps face downwards?

To facilitate cargo discharge operations

To facilitate cargo stowage operations

To prevent fuel draining from the engine

To prevent excessive tyre compression

How do you express the accuracy of an instrument

In % of full scale and to least significant digit

In % of gauge readings and to least significant digit

In % of deviation and to least significant digit

In % of range and to least significant digit

What do we call the heat given to or given up from a substance?

The heat given to or given up from a substance is called heat energy

The heat given to or given up from a substance is called change heat

The heat given to or given up from a substance is called latent heat

The heat given to or given up from a substance is called fusion heat

Which is the "LENGTH OVERALL", in the figure?

Length Overall is indicated by C, in the figure

Length Overall is indicated by D, in the figure

Length Overall is indicated by B, in the figure

Length Overall is indicated by A, in the figure

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.

What is the advantage of a large ship?

They are economical to operate

They cope with emergency situations on VLCCs

They contribute to safer transportation

They are easy to operate and manoeuvre

Give the meaning of the following symbol

Gas detector

Bell fire alarm

Manually operated call point

Fire station

Dieser Online-Test besteht aus 90 zufälligen Fragen aus CES 5.1-Tests zu einem Thema Ihrer Wahl.