單項(xiàng)選擇題

Given the same water depth and line tension，the holding power of a 19 pound/foot wire rope mooring system in comparison to the holding power of a 90 pound/foot chain mooring system will be（）.

A.weaker
B.equal
C.greater
D.indeterminable

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單項(xiàng)選擇題

Generally，when lifting an inflatable liferaft back aboard ship，you would use the（）.

A.towing bridle
B.main weather cover
C.external lifelines
D.righting strap

單項(xiàng)選擇題

Generally，what is used to inflate liferafts?（）

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