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单选题
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
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单选题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
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考题
单选题The most important thing to remember when launching an inflatable liferaft by hand is to（）.A
open the CO2 inflation valveB
open the raft containerC
ensure that the operating cord is secured to the vesselD
inflate the raft on the vessel，then lower it over the side
考题
单选题Your vessel is damaged，listing to port and on occasion flopping to the same angle to starboard. It has a long，slow，sluggish roll around the angle of list. There is excessive trim by the stern with little freeboard aft. What action should you take?（）.A
Jettison any off-center topside weights to lower GM and correct the listB
Pump out any slack after double-bottom tanks to reduce free surface and increase freeboard aftC
Pump out the after peak and fill the forepeak to change the trimD
Press up any slack double-bottom tanks forward of the tipping center，then fill the forepeak if empty
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单选题A tourniquet should be used to control bleeding ONLY（）.A
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单选题液体散货用泵装卸的。（）A
Liquid cargo is loaded and discharged by pumps.B
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考题
单选题（） is sometimes used for piston cooling since leaks into the crankcase would not cause problems.A
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单选题Oil control rings used in two-stroke/cycle diesel engines are located near the bottom of the piston skirt in order to （）A
increase the liner area covered by the oil filmB
maintain an oil film on the lower liner where scuffing is prevalentC
keep excess oil away from intake and exhaust portsD
help cushion piston skirt side thrust by providing a hydrodynamic oil wedge
考题
单选题What could cause a significant difference between actual chain tension and the tension measured by the tensiometer? （）A
The type of anchor and mooring line being usedB
The type of bottom in which the ship is anchoredC
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考题
单选题“Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired, or at least patched up temporarily until the next stop” This sentence means that （）.A
Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired on the spotB
Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired on the next port of callC
Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired until the next stopD
Any leaks in piping, propeller shaft, machinery, tanks, will have to be at least patched up
考题
单选题To avoid impingement attack, care must be taken with the water （） through the tubes of the heat exchangers.A
temperatureB
velocityC
densityD
viscosity
考题
单选题The upward slope of a vessels bottom from the keel to the bilge is called（）.A
camberB
sheerC
rakeD
rise of bottom
考题
单选题Inflatable liferafts are less maneuverable than lifeboats due to their（）.A
shapeB
shallow draftC
large sail areaD
All of the above
考题
单选题Inflatable liferafts are provided with（）.A
a Very pistolB
a towing connectionC
a portable radioD
canned milk
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单选题The operating cord on an inflatable liferaft also serves as a（）.A
lifelineB
painterC
drogueD
marker
考题
单选题A life raft which has inflated bottom-up on the water（）.A
should be righted by standing on the carbon dioxide cylinder, holding the righting straps, and leaning backwardsB
should be righted by standing on the life line, holding the righting straps, and leaning backwardsC
will right itself when the canopy tubes inflateD
must be cleared of the buoyant equipment before it will right itself
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单选题A system of reservoirs and connecting tubes in a gyro compass is called a（）.A
spider elementB
mercury ballisticC
gyrotronD
rotor
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单选题A liferaft which has inflated bottom-up on the water（）.A
should be righted by standing on the carbon dioxide cylinder，holding the righting straps，and leaning backwardsB
should be righted by standing on the life line，holding the righting straps，and leaning backwardsC
will right itself when the canopy tubes inflateD
must be cleared of the buoyant equipment before it will right itself
考题
单选题If an inflatable liferaft inflates upside down，you can right it by（）.A
pushing up on one sideB
standing on the CO2 bottle，holding the bottom straps，and throwing your weight backwardsC
getting at least three or four men to push down on the side containing the CO2 cylinderD
doing nothing; it will right itself after the canopy supports inflate
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