测量露点需要（）。
A.干湿温度计
B.露点盘
C.A+B
D.A、B都不行
参考答案：C
--- Miss Lee, I didn’t catch what you said just now. Could you tell me ___________ again?
---OK.
A．what should we take
B．where shall we meet
C．when we would start
D．how we will get there
某厂房地面高-0.45m，屋面高为14.40m，问该厂房高度多少
