等效电源的（）是线性有源二端网络两端的开路电压。
A．负载电流
B．短路电流
C．负载电压
D．电势源E0
参考答案：D
—___________
—I like comedies.[ ]
A. Do you like comedies?
B. What kind of movies do you like?
C. When do you often go to movies?
D. Where can you see comedies?
目前为止，我国出土最大型制的青铜器？
