航海英语救生作业单项选择题每日一练(2018.05.27)

单项选择题
Personnel boarding a davit-launched liferaft from a ship should be checked to assure they are not in possession of or wearing（）.
A.oil stained shoes or clothing
B.sharp objects that may puncture or damage the liferaft
C.matches or cigarette lighters
D.drugs or paraphernalia not approved by a medical doctor
单项选择题
If you are forced to abandon ship in a liferaft，your course of action should be to（）.
A.remain in the immediate vicinity
B.head for the nearest land
C.head for the closest sea-lanes
D.let the persons in the boat vote on what to do
单项选择题
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
单项选择题
The air spaces in the floor of an inflatable liferaft will provide protection against（）.
A.asphyxiation from CO₂
B.loss of air in the sides of the raft
C.rough seas
D.cold water temperatures
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