话剧《陈毅市长》共有（）。
A.三幕
B.五幕
C.八场
D.十场
参考答案：D
China is a country _____ 56 different nationalities, among which Han _____ the majority of its population. [ ]
A. making up of; consists of
B. consisting of; makes up
C. made up of; consisting of
D. consisted of; making up of
压缩机吸入蒸汽过热，( )。
A．产生制冷效果 B．不产生制冷效果C．有效过热产生制冷效果 D．有害过热产生制冷效果
