防排烟系统测定，不包括对（）的测定，并调整至符合设计与消防的规定。
A、风量
B、风压
C、疏散楼梯间等处的静压差
D、疏散楼梯间的风温
参考答案：D
I don’t know the reason _______ you were absent from the meeting, and I am not sure whether someone will tell me the reason _______you haven’t told me.
A．why; that
B．that; why
C．because; why
D．of which; that
什么是尺寸偏差？
