單項選擇題

On no account（）to be exceeded.

A.is the S.W.L. of the crane
B.are the S.W.L. of the crane
C.the S.W.L. of the crane is
D.the S.W.L.of the crane are

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On a ship crane，the load chart relates the allowable load to the combination of boom length and（）.

A.boom angle
B.boom strength
C.load radius
D.cable strength

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Oil product samples should be taken from the（）.

A.dock riser
B.ship's cargo tanks
C.shore tank discharge
D.All of the above