单项选择题
A.good B.useless C.necessary D.bad
Loose paint and scale are removed with （）.A. a chipping...
单项选择题Loose paint and scale are removed with （）.
A. a chipping hammer B. a scraper C. a lining brush D. saw
We can remove the heavy rust on the plate with a （）.A.s...
单项选择题We can remove the heavy rust on the plate with a （）.
A.scraper B.hammer C.chipping hammer D.saw
Scrapers are used to （）the rust on the plates.A.removeB...
单项选择题Scrapers are used to （）the rust on the plates.
A.remove B.move C.shift D.water
