问题
单项选择题
A snatch block is a（）.
A.block used only with manila rope
B.chock roller
C.hinged block
D.p block used for short，sharp pulls
答案
参考答案：C
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A snatch block is a（）.
A.block used only with manila rope
B.chock roller
C.hinged block
D.p block used for short，sharp pulls
参考答案：C