Puncture leaks in the lower tubes or bottom of an inflatable liferaft should FIRST be stopped by using（）.
A . sealing clamps
B . repair tape
C . a tube patch
D . sail twine and vulcanizing kit
相似题目
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In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）
A . noise coming from that air starting valve
B . continuous operation of the starting air compressor
C . zero air pressure in the air starting system
D . overheated starting air pipe to the cylinder head
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The main function of tie rods in the construction of large, low speed diesel engines is to（）.
A . stiffen the bedplate in way of the main bearings to increase the engines longitudinal strength
B . accept most of the tensile loading that results from the firing forces developed during operation
C . mount the engine frame securely to the hull to prevent shaft coupling misalignment
D . connect the crosshead solidly to the piston rod
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In an oil cooler circulated by sea water, the oil is at a larger pressure the result being that any leak in the cooler will mean a loss of （）.
A . oil
B . sea water
C . refrigerant
D . fresh water
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When possible，what should be the FIRST step in combating a fire on deck resulting from a cargo overflow or a leaking cargo line?（）
A . Blanket the cargo spill with foam
B . Prevent the spread of fire with a foam dam
C . Apply CO
on burning fuel at its source
D . Shut off the transfer of cargo
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When in operation, it is unavoidable that a small amount of oil （） through leakage, and in order to compensate for these leaks the system is connected to a feed pump.
A . escapes
B . overheats
C . expands
D . accelerate
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A vacuum is initially established in the first and second stages of a low pressure evaporator by the use of （）
A . vacuum drag from the auxiliary condensate system
B . individual vacuum pumps
C . a single non-condensing air ejector
D . a two stage air ejector
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In a general oil cooler circulated by sea water, the oil is at a higher pressure, the result being that any leak in the cooler will mean a loss of （）.
A . oil
B . sea water
C . air
D . fresh water
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Generally speaking，you should expect to find low atmospheric pressure prevailing in the earth’s（）.
A . equatorial area
B . polar regions
C . mid-latitudes
D . All of the above
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Compared to a low pressure system，generally the air in a high is（）.
A . warmer，less dense，and less stable
B . cool，more dense，and drier
C . muggy and cloudy
D . extremely moist with high relative humidity
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In the Southern Hemisphere winds in a low pressure system rotate in a（）.
A . clockwise direction
B . northeasterly direction
C . northerly direction
D . counterclockwise directio
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The major difference between the discharge and suction valves installed in most low pressure, reciprocating air compressors is that（）
A、one valve seats upwards, while the other seats downwards
B、the reed valves used on the discharge are made substantially thicker and heavier than thesuction valves
C、the suction valve springs exert a greater tension than the discharge valve springs
D、the discharge valve springs exert a greater tension than the suction valve springs
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The ship（）on a low rock was broken in two by the waves.
A . that had been driven
B . had been driven
C . have been driven
D . which to have been drive
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In a compression refrigeration plant the refrigerant is under low pressure in the （） and under high pressure in the （）.
A . compressor；condenser
B . condenser；evaporator
C . throttle valve；evaporator
D . evaporator；condenser
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In order to accurately measure very low pressures, which of the instruments listed should be used?（）
A . Compound gage
B . Bonrdon tube
C . Manometer
D . Deadweight gage
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Leaky exhaust valve will result in which of the following?（） (1) high exhaust temperature; (2) low compression pressure; (3) low firing pressure.
A . (1) and (2)
B . (1) only
C . (2) only
D . (1),(2) and (3)
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If a fire occurs in the boiler room as a result of a leaking fuel line, you should FIRST （）.
A . notify the engineer on watch
B . isolate and secure the piping
C . throw sand on the fire
D . extinguish the fire using a combination nozzle with applicator
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If an observer in the Northern Hemisphere faces the surface wind，the center of low pressure is to his（）.
A . left，slightly behind him
B . right，slightly behind him
C . left，slightly in front of him
D . right，slightly in front of him
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Your vessel is taking on fuel oil when a small leak develops in the hose and you have ordered the pumping stoppedBefore resuming pumping，you should（）.
A . notify the terminal superintendent
B . place a large drip pan under the leak and ping the scuppers
C . repair the hose with a patch
D . replace the hose
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In winter, some people energy by lowing the heat at night.
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low level of calcium in body may increase the risks of ( )
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In low context cultures, the verbal message contains most of the information and very little is shown in the _____ or the _____.
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Leaky exhaust valve will result in which of the following？①high exhausttemperature ②low compression ③low firing pressure
A.① and ②
B.② and ③
C.① ② and ③
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44 In the second study, students with low GPAs did NOT complain of
A having trouble falling asleep.
B waking at night and having trouble falling back to sleep.
C having difficulty concentrating during the day.
D being kicked in the leg at night.
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What will you say if the guest tells you the temperature in the private roomis too low？
