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单选题
Anchor（） are used in some installations where the cable lifter rotates about a vertical axis.
A
windlasses
B
drums
C
capstans
D
warp ends
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WiresC
RopesD
Lines
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riding pawlB
devil's clawC
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spill pipe
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crankshaftC
vertical axisD
camshaft
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displacement tonnageB
weight forcesC
buoyancy forcesD
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weight of cable to weight of anchorC
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Heave up the cable and leave one shackle in water.B
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Lower the cable and leave one shackle in water.D
Drop anchor and leave one shackle in water.
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whiteB
international orangeC
yellowD
red
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as a connecting strap between the butted ends of platingB
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Three to four times the depth of waterD
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