问题
单项选择题
The revolving drum of a winch used to haul lines is called a（）.
A.bull gear
B.gypsyhead
C.spanner
D.wildcat
答案
参考答案：B
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The revolving drum of a winch used to haul lines is called a（）.
A.bull gear
B.gypsyhead
C.spanner
D.wildcat
参考答案：B