單項選擇題

水手應(yīng)該知道船上吊桿的安全工作負(fù)荷。（）

A. Sailors should know the SWL of cranes on board their ship.
B. Sailors should know the SWL of derricks on board their ship.
C. Officers should know the SWL of derricks on board their ship.
D. Officers should know the SWL of cranes on board their ship.

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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.

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.

水手應(yīng)該知道船上吊桿的安全工作負(fù)荷。（）

你可能感興趣的試題

集裝箱是由龍門吊裝卸。（）

液體散貨用泵裝卸的。（）

水手應(yīng)該知道船上吊桿的安全工作負(fù)荷。（）

液體散貨用泵裝卸的。（）