单项选择题
Before an area can be repainted, preparation is （）.
A.good
B.useless
C.necessary
D.bad
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相关考题
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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 -
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 -
单项选择题
Scrapers are used to （）the rust on the plates.
A.remove
B.move
C.shift
D.water
