题目内容

锅炉

A. Boilers.
B. Water-tube boiler.
C. Fire-tube boiler.
D. Steam.

查看答案

搜索结果不匹配？点我反馈

更多问题

水管锅炉

A. Fire-tube boiler.
B. Water-tube boiler.
C. Exhaust boiler.
D. Scotch boiler

电焊机

A welding machine.
B. A drilling machine.
C. A grinding machine.
D. A cutting machine.

切割机

A welding machine.
B. A drilling machine.
C. A grinding machine.
D. A cutting machine.

漏水了

A. It is leaking.
B. It is broken.
C. It is filled with oil.
D. It is filled with sludge.油渣