单选题
AHeavy rust is removed with a chipping hammer.
BLoose paint and scale is removed with a scraper.
CHeavy rust is removed with a scraper.
DLoose paint and scale are removed with a chipping hammer.
正确答案
答案解析
略
AHeavy rust is removed with a chipping hammer.
BLoose paint and scale is removed with a scraper.
CHeavy rust is removed with a scraper.
DLoose paint and scale are removed with a chipping hammer.