A、A.鹅颈头
B、B.滑车
C、C.滑轮
D、D.抓斗
A、gooseneck B、block C、lockpin D、grab
A、gooseneck B、guy C、center guy D、stay
A、A.block B、B.guide roller C、C.gooseneck D、D.tackle
A、gooseneck paint brush B、flat paint brush C、hacksaw D、hand saw
A、hacksaw B、hand saw C、flat paint brush D、gooseneck paint brush
A、bend B、bent C、band D、bended
A、gooseneck B、block C、derrick step D、crane
A、to use B、to operate C、maneuvering D、using
A、heavy derrick B、pulley block C、topping lift block D、guy tackle
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