單項(xiàng)選擇題

Renew a cargo runner, please. （）

A.fall
B.stay
C.guy
D.sling

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單項(xiàng)選擇題

We use TEU as the unit of the standard containers. Its length is（）.

A.40ft
B.20ft
C.20m
D.40m

單項(xiàng)選擇題

The safe working load of the derrick is （）.

A.5 tons
B.5 metres
C.5 feet
D.5 mile