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单选题
Nylon rope is often used in the makeup of a towline because it（）.
A
floats
B
stretches
C
handles easily
D
resists rot
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（）should be greased every month or two and it should be kept on a reel when not in use.A、Wire ropeB、Hemp ropeC、Nylon ropeD、Wooden rope
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单选题In towing，chocks are used to（）.A
protect the towline from chafingB
secure the end of the towline on the tugC
stop off the towline while retrieving itD
absorb shock loading on the towline
考题
单选题A whipping is（）.A
a messengerB
a stopper for nylon lineC
a U-bolt for securing a cargo whip to the winch drumD
turns of twine around a rope end
考题
单选题A natural fiber rope can be ruined by dampness because it may （）.A
rotB
shrinkC
stretchD
unlay
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单选题Which statement is TRUE about nylon line?（）A
Manila line will usually last longer than nylon lineB
Nylon line is excellent for use in alongside towingC
A normal safe working load will stretch nylon line 50%D
Nylon stoppers should be used with nylon line
考题
单选题When we stow nylon rope, we can （）.A
stow it in strong sunlightB
cover it with tarpaulinsC
keep it on a reelD
keep it by itself
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单选题An advantage of nylon rope over manila is that nylon rope（）.A
can be used in conjunction with wire or spring-lay ropeB
can be stored on decks exposed to sunlightC
can hold a load even when a considerable amount of the yarns have been abradedD
gives audible warning of overstress whereas manila does not
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单选题Nylon rope is the strongest and most elastic of all the （）ropes.A
synthetic fiberB
natural fiberC
wireD
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单选题The main reason a long towline is used during an oceantow is that（）.A
a margin of safety is provided should the line partB
the towline will wear more evenlyC
there will be less stress on the towlineD
a slight increase in speed will be realized
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单选题In context, which version of the underlined portion of sentence 5 (reproduced below) is the best?Because the victims often get depression because of their symptoms, other doctors used to bell it was psychological.A
those symptoms wereB
their depression wasC
the victims wereD
chronic fatigue syndrome wasE
they were
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单选题A term used to describe the dip in a towline that acts as a shock absorber is（）.A
catenaryB
stepC
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单选题Nylon line can be dangerous because it（）.A
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kinks be dischargedC
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单选题What is an advantage of having wire rope with a fiber core over that of a wire rope of the same size with a wire core（）.A
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单选题An advantage of nylon rope over manila rope is that nylon rope（）.A
can hold a load even when a considerable number of the yarns have been abradedB
can be stored on deck，exposed to sunlightC
can be used in conjunction with wire or spring-lay ropeD
gives audible warning of overstress whereas manila does not
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单选题It is not advisable to use nylon for alongside towing because it（）.A
is too expensive for everyday towing usageB
binds on the cleatsC
parts too readilyD
strethes too much
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单选题Copper is often used as an electrical conductor because it （）.A
has high resistance at low temperaturesB
has a highly polished surfaceC
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单选题It is good practice to use long towlines for ocean tows because the（）.A
wear on the towline is equalizedB
weight of the towline increases the towing forceC
dip in the towline absorbs shock loadsD
danger of overriding is reduced
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单选题People who are closely ______ to each other usually have similar appearances because much of their genetic makeup is shared.A
relatedB
relevantC
relationD
reliant
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