單項(xiàng)選擇題The preventer guy，as used on a conventional yard and stay rig，（）.

A.is rigged at an angle of 70°to 90°from the guy it assists
B.takes the strain imposed on the schooner guy when burtoning cargo
C.is rigged when lifting cargo that exceeds the SWL of a single whip
D.should take the strain if the regular guy parts


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1.單項(xiàng)選擇題The payment proportionate to the part of the voyage accomplished or to the part of the cargo delivered is referred as（）.

A.advance freight
B.back freight
C.dead freight
D.pro rata freight

2.單項(xiàng)選擇題The patches where rust have been removed should be wiped clean before paint is（）.

A.applied
B.supplied
C.replied
D.complied

3.單項(xiàng)選擇題The necessity of the segregation of cargoes is determined by（）.

A.experience from practice
B.various types of cargoes
C.different types of ships
D.personal abilities

4.單項(xiàng)選擇題The National Cargo Bureau represents the（）.

A.agent
B.operator
C.shipper
D.All of the above

5.單項(xiàng)選擇題The most variable factor in the control of broken stowage is（）.

A.the use of excessive amounts of dunnage
B.the use of excessive amounts of filler cargo
C.the failure to stow some items in neat and uniform rows and tiers
D.the skill，industry and interest of the longshoremen