城市布局形式是城市总体布局带有原则性的重大问题。 ( )
参考答案：对
—————Good evening. Huangshan Hotel.
—————Good evening. ______________?
A．Do you still have a room for tonight
B．What would you like， please
C．Is there anything I can do for you
D．Who is that speaking， please
下列哪些气体属压缩气状态（）。
A.氧气
B.氦气
C.二氧化碳
D.氧化亚氮
E.环丙烷
