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單項(xiàng)選擇題

（）(夾子)have been used up.

A.Clamps
B.Bars
C.Pads
D.Plates

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單項(xiàng)選擇題

We are loading （）(危險(xiǎn)貨)now.

A. flammable cargo
B. dangerous cargo
C. deck cargo
D. packed cargo

單項(xiàng)選擇題

The （）(鵝頸頭)is bent.

A.gooseneck
B.block
C.lockpin
D.grab