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單項(xiàng)選擇題

（）, the second one will start automatically.

A.If the first stand-by set failed
B.If the first stand-by set fails
C.If the first stand-by set will fail
D.If the first stand-by set doesn’t fail

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單項(xiàng)選擇題

Changes in direction or speed of the main propulsion units shall be recorded, （）an Administration has determined that the size or characteristics of a particular ship make such recording impracticable.

A.in addition to
B.in addition that
C.except for
D.except where

單項(xiàng)選擇題

The officer in charge of the engineering （）the watch to the reliving officer if there is reason to believe that the latter is obviously not capable of carrying out the watch-keeping duties effectively.

A.shall take over
B.shall not take over
C.shall hand over
D.shall not hand over

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