航海英语救生作业章节练习(2019.03.30)

单项选择题
The limit switches on a ships survival-craft winch system（）.
A.stop the winch just before the craft reaches the final stowage position
B.limit the amount of cable on the drum
C.limit the ascent rate
D.stop the winch in case the craft weighs too much
单项选择题
Signaling devices required on inflatable liferafts include a(n) （）.
A.Very pistol
B.orange smoke signal
C.air horn
D.lantern
单项选择题
A hydrostatic release mechanism for a liferaft（）.
A.must be wet before it will release
B.should be kept in a watertight cover except in an emergency
C.will inflate the raft in its cradle if operated manually
D.must be submerged to a certain depth to release automatically
单项选择题
To launch a liferaft by hand you should（）.
A.cut the casing bands，throw the liferaft over the side，and it will then inflate
B.detach the operating cord，throw the raft over the side，and it will then inflate
C.cut the casing bands，throw the raft over the side，and pull the operating cord
D.throw the liferaft over the side and pull the operating cord
单项选择题
Inflatable liferafts are provided with（）.
A.a Very pistol
B.a towing connection
C.a portable radio
D.canned milk
单项选择题
If the hydrostatic release mechanism for an inflatable liferaft is not periodically serviced and becomes inoperative，it will NOT（）.
A.set the water lights on immersion
B.release the dye-marker from the liferaft
C.free the liferaft from the vessel
D.break the seal on the carbon dioxide cylinder
单项选择题
A rigid lifesaving device only designed for survivors to hold on to while in the water is a（）.
A.liferaft
B.life float
C.life preserver
D.buoyant apparatus
单项选择题
Generally，what is used to inflate liferafts?（）.
A.non-toxic gas
B.Oxygen
C.Hydrogen
D.Helium
单项选择题
Inflatable liferafts shall be serviced at an approved servicing facility every 12 months or not later than the next vessel inspection for certification. However，the total elapsed time between servicing cannot exceed（）.
A.12 months
B.15 months
C.17 months
D.18 months
单项选择题
An inflatable liferaft can be launched by（）.
A.the float-free method ONLY
B.breaking the weak link on the painter
C.throwing the entire container overboard and then pulling on the operating cord to inflate the raft
D.removing the securing straps