單項選擇題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


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1.單項選擇題If an inflatable liferaft is to be released manually，where should the operating cord be attached before throwing the raft overboard?（）

A.Do not attach the cord to anything but throw it overboard with the raft container
B.Attach the cord to a fixed object on the ship
C.You should stand on the cord
D.Attach the cord to the special pad eye on the raft davit launcher

2.單項選擇題If an inflatable liferaft is overturned，it may be righted by（）.

A.filling the stabilizers on one side with water
B.releasing the CO2 cylinder
C.pushing up from under one end
D.standing on the inflating cylinder and pulling on the straps on the underside of the raft

3.單項選擇題If an inflatable liferaft inflates upside down，you can right it by（）.

A.pushing up on one side
B.standing on the CO2 bottle，holding the bottom straps，and throwing your weight backwards
C.getting at least three or four men to push down on the side containing the CO2 cylinder
D.doing nothing; it will right itself after the canopy supports inflate

4.單項選擇題How should signal flares be used after you have abandoned ship and are adrift in a liferaft?（）.

A.Immediately use all the signals at once
B.Use all the signals during the first night
C.Employ a signal every hour after abandoning ship until they are gone
D.Use them only when you are aware of a ship or plane in the area

5.單項選擇題Generally，what is used to inflate liferafts?（）.

A.non-toxic gas
B.Oxygen
C.Hydrogen
D.Helium