单项选择题
scraper()
A.扳手
B.刮刀
C.羊角锤
D.锤子
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单项选择题
lifeboat()
A.救生艇
B.救生船
C.救生圈
D.救生筏
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单项选择题
bitumen()
A.沥青
B.水泥
C.漆
D.稀释剂
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