单项选择题

A.is calling atB.are calling atC.is calling onD.are cal……

We（）this port for replenishment of fuel oil.

A.is calling at
B.are calling at
C.is calling on
D.are calling on

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热门试题

单项选择题Stand by（）VHF CH16.

A.of
B.on
C.in
D.at

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A.When
B.Which
C.That
D.What

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A.will
B.shall
C.can
D.may

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A.will
B.can
C.shall
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A.of
B.in
C.on
D.at