單項選擇題

When liquid is free to move transversely in a tank, the effect is called（）.

A.Free communication
B.Free fensity
C.Free surface
D.Negative GM

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單項選擇題

When the truck does not work, the driver should（）engines.

A.turn on
B.turn off
C.shut up
D.close

單項選擇題

When the vessel arrives, the cargo of machinery to be unloaded is（）.

A.transpored to the ships side
B.transported into the shed
C.lashed and secured
D.delivered to the consignor