天桥、地道的宽度应根据客流量确定,但不应小于()。
A.1m
B.2m
C.3m
D.4m
参考答案:D
刚性防水屋面工程量计算按设计图示尺寸以面积计算,应扣除( )所占的面积。
A.房上烟囱
B.风帽底座
C.女儿墙
D.风道
—He isn't an excellent astronaut, is he?
—______. [ ]
A. Yes,he isn't
B. No,he is
C. Yes,he is
D. No,he hasn't