出现滴油时候后,应用()对整个车身进行清擦,然后进行打磨。
A.甲苯
B.乙笨
C.乙醇
D.异丙醇
参考答案:D
English __________ in our school for almost 60 years.
A.has taught
B.was taught
C.had been taught
D.has been taught
蓄电池的主要指标包括()。
A.电动势
B.电流
C.终了电压
D.开始电压
E.循环寿命