设置排烟设施的走道.净高不超过（）m的房间，应划分防烟分区。
A、6
B、7
C、8
D、9
参考答案：A
—Do women smoke?
—Some _____, some _____.[ ]
A. do, don't
B. does, doesn't
C. have, haven't
D. are, aren't
EPS用作疏散照明电源时，其投入时间不应大于（）s。
A.0.1
B.0.15
C.0.25
D.0.5
