A.用濕布擦抹 B.用汽油沾 C.用煤油擦抹 D.用風(fēng)機(jī)吹除
A.60℃ B.80℃ C.100℃ D.120℃
A.-15%~+15% B.-10%~+10% C.-5%~+10% D.+5%~+10%