單項(xiàng)選擇題It is the only entrance()the harbor for vessels of moderate draught.

A.to
B.for
C.on
D.over


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1.單項(xiàng)選擇題Loading cargo operation in hold No.3 stopped owing to().

A.gangs employed
B.windlass trouble
C.gangs unavailable
D.shortage of navigational charts

2.單項(xiàng)選擇題Mariners must ascertain that deck loads are stowed in such a manner as().

A.to affect the vessel's stability
B.not to affect the vessel's stability
C.to keep the vessel on even keel
D.not to keep the vessel on even keel

3.單項(xiàng)選擇題Mariners not entering the port are()to keep at least one mile off.

A.advised
B.reported
C.complied
D.supplied

4.單項(xiàng)選擇題Masts and derricks of cargo ships are made of().

A.steel
B.copper
C.bross
D.zinc

5.單項(xiàng)選擇題My ship has been delayed()poor visibility.

A.because
B.in reason of
C.owing to
D.for