活塞式压缩机润滑油的性能要求比一般润滑油的性能要求高。
参考答案：对
不是心衰实证的表现是
A．浮肿
B．尿少
C．唇甲紫绀
D．五心烦热
E．脘腹胀痛
In relation to employment law, discuss the common law duties of an employee under a contract of employment. (10 marks)
