EPON是基于以太网方式的（）。
A.无源光网络
B.有源光网络
C.光分配网络
D.局域网
参考答案：A
—In my opinion, China has more _____ to deal with the disease of A/HINl.
—I quite agree with you. Chinese medicine works well. [ ]
A. advantages
B. interests
C. equipments
D. materials
下列情况中，可出现颈静脉怒张的是
A．右心功能不全
B．气胸
C．肝硬化
D．急性病毒性肝炎
E．胸腔积液
