充血性心衰所产生的胸腔积液为（）。
A.漏出液B.渗出液C.脓性胸液D.血性胸液E.乳糜性胸液
参考答案：A
28．It is three months since father_____, I____ in France now had it not been for his illness.
A．was; would have been studying
B．had fallen; would study
C．has been; would have studied
D．fell; would be studying
（）不是“物流管理的原则”。
A、服务性原则
B、通用性原则
C、合理化原则
D、综合性原则
