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單項(xiàng)選擇題

The broadcast will normally be made on the two listed frequencies simultaneously except during transmitter maintenance periods when the broadcast will be made on the two frequencies（）.

A.at the same time
B.exclusively
C.within the same period
D.consecutively

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單項(xiàng)選擇題

THE ANCHOR WAS HEAVED AWEIGH means（）.

A.The anchor was weighted
B.The anchor was let go
C.The anchor was lost
D.The anchor was clear of the bottom

單項(xiàng)選擇題

The abbreviation RYC in a marine cable generally stands for（）.

A.referring to your crew
B.reference for your captain
C.return to your cabin
D.received your cable

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