试简述装配的原则。
参考答案：
（1）原台装配；
（2）同寿命串件；
（3）边装、边检查、边记录签名。
Firms in perfectly competitive markets and firms operating in a market characterized by monopolistic competition have several things in common. Which of the following is least likely one of them（）
A. Both maximize economic profit.
B. Both face perfectly elastic demand curves.
C. Both operate in markets that have low or no barriers to entry.
房室延搁
