A.at
B.for
C.in
D.to
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A.at
B.in
C.on
D.by
A.in
B.up
C.on
D.over
A.whom
B.what
C.which
D.where
A.tightly
B.closely
C.securely
D.strictly
A.watch
B.to watch
C.watching
D.watched
最新試題
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
When steering by autopilot,how often should the steering be checked?（）
Berthing means bringing a vessel to her berth until（）.
Before any loading takes place any signs of the previous cargo should do（）.
Bales close to the deckhead should be covered to prevent（）.
The ISM code is part of（）.
A tide is called diurnal when（）.
What is it called when it is possible to ignite the vapour above the oil?（）
Which of the following shall not the officers in charge of the navigational watch do?（）
According to the relevant regulation, lifeboat should be powered by（）.