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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1.單項選擇題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

2.單項選擇題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

3.單項選擇題For any given pedestal crane，when the boom is lengthened，the lifting capacity is（）.

A.unchanged
B.increased
C.eliminated
D.decreased

4.單項選擇題For a given weight of cargo，the stress on the heel block of a cargo boom（）.

A.increases as the cargo closes the head while hoisting
B.increases if the cargo runner is doubled up
C.decreases as the boom is topped to a greater angle
D.is determined by the thrust stresses on the boom

5.單項選擇題Bonding cables are used during cargo transfer to（）.

A.provide safe electrical power connection to barge equipment
B.keep the vessel from surging excessively
C.prevent an accidental discharge of static electricity
D.secure the cargo hose to a hatch when loading overall