單項選擇題

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

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

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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

單項選擇題

The amount and accuracy of the information provided on the different charts（）considerably.

A.varies
B.maintains
C.Shifts
D.assembles