患者确诊为肝硬化，做腹水检查，腹水一般为( )
A．淡黄色漏出液B．漏出液与渗出液之间C．渗出液D．血性腹水E．腹水混浊
参考答案：A
Which of the following is NOT a characteristic of an oligopoly（）
A. There are few sellers.
B. High barriers to entry.
C. Relatively small economies of scale.
自动化设备检修或工作结束不需要向相应调度的自动化值班人员汇报和确认。
