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單項(xiàng)選擇題

The generators on your rig have shut down，leaving you without navigation lights. Which emergency signal would you transmit over the VHF radio to alert vessels in the area of your predicament? （）

A.Mayday，Mayday，Mayday
B.Pan，Pan，Pan
C.Security，Security，Security
D.Lights out，Lights out，Lights out

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單項(xiàng)選擇題

The expression STAND-BY ENGINE means:（）.

A.to get the engine ready
B.to respond to the engine
C.to maneuver the engine
D.to change the engine

單項(xiàng)選擇題

Some goods are missing（）terrible weather.

A.due
B.because of
C.because
D.since

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