Windows 2000 Server的路由器中,有几种可用的路由接口类型()
A.LAN接口
B.按需拨号接口
C.VPN接口
D.IP隧道接口
参考答案:A, B, D
It was not until dark _____ he found _____ he thought was the correct way to solve the problem. [ ]
A. that; what
B. that; that
C. when; what
D. when; that
纯化抗原常用的葡聚糖法适用于()。
A.密度梯度离心
B.凝胶过滤
C.亲和层析
D.离子交换层析
E.沉淀