问题
单项选择题
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
答案
参考答案：A
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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
参考答案：A