小明经常看见广告上说：“舒肤佳可以有效地抑制细菌的存活．”他想通过自己所学的知识

— Would you like to come to my birthday party tomorrow?

— Oh, thanks a lot. ____________.[ ]

A. Yes, please

B. Yes, I would

C. I'd love to

The engine of the bus was ______，and the bad weather added to the worries of the passengers.

A．in vain

B．in good condition

C．out of work

D．out of order

这个标志的作用是用以警告车辆驾驶人谨慎慢行，注意横向来车。

分布式发电系统，关口计量点应安装同型号、同规格、准确度相同的主、副电能表各一套。

举例说明什么是成语。