问题
单项选择题
If a mooring line should part while you are tying up at a dock，you should make a temporary eye by tying a（）.
A.becket bend
B.clove hitch
C.bowline
D.square knot
答案
参考答案：C
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If a mooring line should part while you are tying up at a dock，you should make a temporary eye by tying a（）.
A.becket bend
B.clove hitch
C.bowline
D.square knot
参考答案：C
类的药理作用机制是（）。