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單項選擇題

An on-load release system on a survival craft means the cable can be released（）.

A.only when the load is taken off the cable
B.only when there is a load on the cable
C.only when activated by the controls at the lowering station
D.at any time

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單項選擇題

An oxygen indicator can be used to determine if there is（）.

A.sufficient oxygen in a compartment to support life
B.combustible gases present
C.hydrogen gases present
D.All of the above

單項選擇題

Anchoring and fishing in this area are（）.

A.danger
B.dangerous
C.dangerously
D.dangering