單項(xiàng)選擇題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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1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題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

3.單項(xiàng)選擇題The helm command PORT TWENTY means().

A.change course twenty degrees to the left
B.put the rudder left twenty degrees
C.put the rudder hard left for the first twenty degrees of swing
D.put the rudder left twenty degrees and then ease back as the vessel starts swinging

4.單項(xiàng)選擇題The circulation around a low pressure center in the Northern Hemisphere is().

A.counterclockwise
B.variable
C.clockwise
D.anticyclonic

5.單項(xiàng)選擇題How long are you prohibited to consume alcohol prior to serving as a member of a watch?()

A.within two hours
B.within three hours
C.within four hours
D.within five hours