搭设不停电跨越架使用的绝缘绳受潮时不得()。
A、使用
B、更换
C、检测
参考答案:B
x的6倍比它的3倍多l.8,求x.
Tom's mother has left Kunming Shanghai already. She will have a meeting there.
A. to
B. off
C. for
D. away