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單項選擇題

In revised editions of admiralty charts the（）are corrected first.

A.smaller scales
B.larger scales
C.smaller scales and larger scales
D.moderate scales

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單項選擇題

In the doldrums you can expect（）.

A.steady, constant winds
B.frequent rain showers and thunderstorms
C.steep pressure gradients
D.low relative humidity

單項選擇題

In the doldrums you will not have（）.

A.high relative humidity
B.frequent showers and thunderstorms
C.steep pressure gradients
D.frequent calms