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单选题
Sisal rope is （）than manila rope.
A
stronger and more flexible
B
less strong and less flexible
C
less strong and more flexible
D
more strong and less flexible
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Ropes can be divided into three types: （）.A、natural fiber rope, manila rope and synthetic ropeB、natural fiber rope, synthetic rope and wire ropeC、synthetic rope, manila rope and wire ropeD、synthetic rope, manila rope and wooden rope
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Sisal rope is less strong and less flexible than （）.A、hemp ropeB、manila ropeC、natural fiber ropesD、wooden rope
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Sisal rope is （）than manila rope.A、stronger and more flexibleB、less strong and less flexibleC、less strong and more flexibleD、more strong and less flexible
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（）doesn’t shrink or swell after contact with water.A、Hemp ropeB、Sisal ropeC、Manila ropeD、wooden rope
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单选题Sisal rope is less strong and less flexible than （）.A
hemp ropeB
manila ropeC
natural fiber ropesD
wooden rope
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单选题A mooring line is described as being 6x24，1-3/4 inch wire rope. What do the above numbersrefer to?（）A
Strands，yarns，circumferenceB
Strands，wires，diameterC
Wires，yarns，diameterD
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单选题Compared to manila line,size for size, nylon line（）.A
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is equivalent to manila lineD
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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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单选题远离缆绳。（）A
Get ready for the ropes.B
Keep away from the ropes.C
Slack away the ropes.D
Heave in the rope.
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问答题While working on a case Dr Watson accidentally fell down a 30ft dry wishing well. Sherlock Holmes lowered him down a rope. “Can you climb up?” shouted Holmes. “I’ll be out before you know it.” came Watson’s reply. But the climb wasn’t as easy as Watson had first imagined. Each hour he managed to climb 3ft—but slipped back 2ft. How long did it take Watson to get out
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单选题Nylon line is better suited than manila for（）.A
towing alongsideB
towing asternC
holding knots and splicesD
resisting damage from chemicals
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单选题Vessels lying afloat at buoys for more than 24 hours should use anchor chain for（）and insurance wire for（）.A
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forward spring／after springC
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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
Fiber core rope offers greater strengthB
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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The cheek length of a block in inches should be about（）.A
three times the circumference of a manila lineB
five times the diameter of a manila lineC
twice the diameter of its sheaves for manila lineD
twenty times the diameter of a manila line
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单选题Manila rope is （）than sisal rope.A
cheaperB
more expensiveC
less expensiveD
cheap
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