单项选择题

A safety shackle is identified by its（）.

A.shape
B.pin
C.certification stamp
D.color code

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单项选择题

A rope ladder with wooden rungs is a（）.

A.drop ladder
B.life ladder
C.Jacob's ladder
D.jury ladder

单项选择题

A new liferaft has been installed on your vessel. The operating cord should be（）.

A.attached to the raft stowage cradle or to a secure object nearby with a weak link
B.checked to see that it's unattached
C.coiled neatly on the raft container
D.faked on deck and lead through a chock

单项选择题

A long splice in a line（）.

A.is used in running rigging
B.doubles the size of the line
C.is only used on fiber rope
D.is very weak