A.is the S.W.L.of the crane
B.are the S.W.L. of the crane
C.the S.W.L. of the crane is
D.the S.W.L. of the crane are
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A.make command of
B.take command of
C.get command of
D.have command of
A.advised
B.to be advised
C.be advised
D.are advised
A.to
B.with
C.by
D.for
A.of
B.for
C.with
D.in
A.repair
B.repairing
C.to repair
D.be repaired
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Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
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Manoeuvring information can not be obtained from（）.
Bales close to the deckhead should be covered to prevent（）.
When steering by autopilot,how often should the steering be checked?（）
（）is on the panel of radar.
Before any loading takes place any signs of the previous cargo should do（）.
ECDIS must be able to perform all of the following EXCEPT（）.
The company should establish and maintain procedures to control all documents and date which are relevant to（）.