单项选择题

Before any loading takes place any signs of the previous cargo should do（）.

A.kept
B.removed
C.replaced
D.recycled

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单项选择题

Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）

A.coastal breeze
B.sea breeze
C.land breeze
D.mistral

单项选择题

Which of the following shall not the officers in charge of the navigational watch do?（）

A.continue to be responsible for the safe navigation of the ship
B.Leave the bridge
C.Keep the watch on the bridge
D.Use any available navigational aids necessary to ensure that the ship follows the planned course