产权界定的原则是：谁投资，谁拥有产权。
参考答案：对
I think this is the best way to solve the problem. Do you ______me?
A．play with
B．hear of
C．agree with
D．get on well with
急性化脓性胆管炎时可并发
A．门静脉炎B．细菌性肝脓肿C．两者均可D．两者均不可
