單項選擇題

集裝箱是由龍門吊裝卸。（）

A. Containers are loaded and discharged by gantry cranes.
B. Cases are loaded and discharged by gantry cranes.
C. Cases are loaded and discharged by heavy derricks.
D. Containers are loaded and discharged by heavy derricks.

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單項選擇題

液體散貨用泵裝卸的。（）

A. Liquid cargo is loaded and discharged by pumps.
B. Liquid cargo is loaded and discharged by tubes.
C. Liquid bulk cargo is loaded and discharged by tubes.
D. Liquid bulk cargo is loaded and discharged by pumps.

單項選擇題

這個吊桿的安全工作負(fù)荷是6噸。（）

A. The SWL of the derrick is five tons.
B. The SWL of the heavy derrick is six tons.
C. The SWL of the derrick is six tons.
D. The SWL of the crane is six tons.

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集裝箱是由龍門吊裝卸。（）

你可能感興趣的試題

液體散貨用泵裝卸的。（）

這個吊桿的安全工作負(fù)荷是6噸。（）

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液體散貨用泵裝卸的。（）