电动工具应做到“()”。
A、一机一保护
B、一机一闸
C、一机一闸一保护
参考答案:C
—Where _____ she _____ on vacation?
—She _____ her uncle.[ ]
A. did, go; visited
B. does, go ;visited
C. did, went; visited
D. does, went; visit
()是对销售货物或提供劳务过程中实现的增值额征收的一种税。
A.消费税
B.营业税
C.增值税
D.关税