单项选择题
Mistakes don′t just happen;they occur for a reason.Find...
单项选择题Mistakes don′t just happen;they occur for a reason.Find out the reason and then making the mistake becomes__________.
高层民用建筑中自动喷水灭火系统用水量按火灾持续时间( )h计。A.1B.0.5C.2D.3
单项选择题高层民用建筑中自动喷水灭火系统用水量按火灾持续时间( )h计。
We should respect food and think about the people who d...
单项选择题We should respect food and think about the people who don′t have__________we have here and treat food nicely.
