单项选择题
A qualified deck officer should be（）the watch.
A.in charge of
B.arranged
C.decided to
D.the depth of
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单项选择题
A certificated lifeboatman assigned to command the lifeboat should（）.
A.be the first individual to board the craft
B.drain the hydraulic pressure before lowering the craft
C.have a list of the persons assigned to the lifeboat
D.All of the above -
单项选择题
（）is not convincing at all.
A.What do
B.What you say
C.What you said
D.What did you say -
单项选择题
（）for many years，the AB passed the examination and became an officer.
A.Having ignored him
B.To have been ignored
C.To be ignored
D.Having been ignored
