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單項選擇題

Which of the following is not a form of precipitation?（）

A.rain
B.frost
C.sleet
D.snow

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單項選擇題

Waves formed by the wind blowing far away are known as（）.

A.sea
B.current
C.tide
D.swell

單項選擇題

If the moisture content of the cargo sample is（）the Transportable Moisture Limit,then the cargo should be safe to load.

A.above
B.below
C.equal to
D.uncertain