单项选择题

Metal drums should be stowed（）with dunnage between tiers.

A.athwart
B.on end
C.bilge and cantline
D.bed

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单项选择题

Which of below device has the maximum coverage range（）

A.AIS
B.Radar
C.VHF
D.LRIT

单项选择题

We took usual steps:sounding the depth, reversing and stopping engine,paying out anchor and 60 fathoms of chain cable in the depth of 12 fathoms.The operation above is（）.

A.berthing
B.searching
C.anchoring
D.picking up pilot

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