治疮肿、瘰疬宜选
A．阿胶
B．白芍
C．龙眼肉
D．何首乌
E．南沙参
参考答案：D
10BaseT is an Ethernet LAN tem meaning a maximum transfer rate of 10 Mbps that uses baseband signaling and twisted pair cabling. A 10BaseT Ethernet LAN has a （） topology.
A．star
B．ring
C．bus
D．none of the above
设X1，X2…，Xn是来自总体X的简单随机样本，X服从
分布，则未知参数λ的最大似然估计量
=______．
分布，则未知参数λ的最大似然估计量
=______．