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單項(xiàng)選擇題

When it is advisable to remain on VHF channel 14 you should say（）.

A.stand by on VHF channel 14
B.come to VHF channel 14
C.VHF channel 14 is the best place for you to stay by
D.remain in channel 14 and do not change

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單項(xiàng)選擇題

（）my knowledge the figure at the loading port is not quite accurate.

A.At
B.In
C.To
D.With

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