單項(xiàng)選擇題Which action will affect the trim of a vessel? （）

A.Moving high weights lower
B.Adding weight at the tipping center
C.Moving a weight forward
D.Moving lower weight high


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1.單項(xiàng)選擇題On no account（）to be exceeded.

A.is the SWL of the crane
B.are the SWL of the crane
C.the SWL of the crane is
D.the SWL of the crane are

2.單項(xiàng)選擇題When viewed from above，the best position for the guy in relation to the boom is（）.

A.At a 45° angle
B.At right angles
C.4 feet aft of the heel of the boom
D.Parallel to the boom

3.單項(xiàng)選擇題Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.

A.International Cargo Bureau Regulations
B.Load Line Regulations
C.Rules and Regulations for Cargo and Miscellaneous Vessels
D.Vessel's classification society rules and regulations

4.單項(xiàng)選擇題Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.

A.Taglines are wire rope purchases that raise and lower the jib
B.Taglines are wire ropes for horizontal positioning of the rider block
C.Taglines can be fastened to corners of vehicles or containers
D.The crane might not have taglines installed in its rigging system

5.單項(xiàng)選擇題Sudden starts or stops of the boom is likely to cause all of the following except（）.

A.breaking a cargo runner
B.parting guys topping lifts
C.carrying away a block
D.overheating the resistors and eventually burning out