滤层的规格包括滤层的粒度、宽度和材料。
参考答案：错
—You don't come from England, do you?
—_______. I come from Australia. [ ]
A. Yes, I do
B. No, I do
C. Yes, I don't
D. No, I don't
空调送风系统由过滤器、（）、（）、风机等组成；
