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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

A drilled hole is accurately finished to size with a （）

A.center drill
B.finish drill
C.broach
D.reamer

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单项选择题

Which of the files listed is tapered on three sides and is used to file acute internal angles?（）

A.Mill
B.Round
C.Square
D.Triangular

单项选择题

Using a file without a handle may result in （）

A.your work becoming rounded
B.injury to your hand
C.overheating of the file
D.pinning

单项选择题

Before welding is permitted on a fuel tank, it must be certified or declared （）

A.safe for becoming rounded
B.safe for hot work
C.not safe for personnel
D.not safe for hot work

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