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單項(xiàng)選擇題

The lashings of a stack of containers with interlocking fittings restrain the forces that cause（）.

A.toppling
B.racking
C.buckling
D.crushing

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單項(xiàng)選擇題

The freight will not be payable（）the goods are delivered in such a condition that they are substantially and in a mercantile sense the same goods as those shipped.

A.if
B.whether
C.when
D.unless

單項(xiàng)選擇題

The fittings used to secure a watertight door are known as（）.

A.clamps
B.clasps
C.dogs
D.latches