單項(xiàng)選擇題A lookout can leave his station（）.

A.at the end of the watch
B.at any time
C.ONLY when properly relieved
D.15 minutes before the end of the watch


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2.單項(xiàng)選擇題A helmsman receives the command Right 15 degrees rudder. The helmsman’s IMMEDIATE reply should be（）.

A.Aye Aye Sir
B.Right 15 degrees rudder
C.Rudder is right 15
D.No reply is necessary，just carry out the order

3.單項(xiàng)選擇題“How do you read?” “I read you four”（）.

A.excellent
B.bad
C.fair
D.good

4.單項(xiàng)選擇題“Full speed ahead” and “Full speed astern” are（）given by the officers or the pilots.

A.sailing orders
B.speed orders
C.wheel orders
D.telegraph orders

5.單項(xiàng)選擇題（）port anchor，one shackle in water.

A.Throw
B.Heave in
C.Cast off
D.Let go