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單項(xiàng)選擇題

To avoid shock ,you should reduce speed by（）（低速）control.

A. low speed
B. high speed
C. inching
D. slow speed

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單項(xiàng)選擇題

This is a（）（側(cè)滾動(dòng)）type hatch cover.

A.folding
B.rolling
C.side-rolling
D.unfolding

單項(xiàng)選擇題

We need plenty of （）(綁扎鋼絲).

A. bridge plates
B. bridge fittings
C. twist locks
D. lashing wires

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