气胸的典型X线表现哪项不正确（）

A.患侧胸腔透亮度增加

B.肺压缩征

C.可见气胸带

D.少量气胸不易发现时嘱患者深吸气，从而易于显示气胸带

E.血气胸时可见液气平面

According to the talk, who owned the receivers in the early days of radio

A．Military communications officers.

B．People who treated radio technology as a hobby.

C．People who lived in big cities.

D．People with an interest in music