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单选题
A pelican hook（）.
A
can be released while under strain
B
is used for boat falls
C
is used for extra heavy loads
D
is used for light loads only
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单选题In securing a towing cable，consideration must be given to letting go in an emergency. The possible whip of towlines when released can be overcome by（）.A
increasing the shaft RPM prior to releaseB
using a pelican hook for quick releaseC
using preventersD
using a short chain for the lead through the stern chock
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longshore hookB
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prevents the sling ring from coming out of the hook if the strain is abruptly easedC
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increases the lifting capacity of the hookB
protects the hook from the sling ringC
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All of the above
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a short bridleB
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another name for a pelican hookD
used to hold it amidships
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fakingB
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