可以使固液及两种不相混溶的液体分离的方法是（）
A.水提醇沉法
B.离心分离法
C.醇提水沉法
D.盐析法
E.吸附澄清法
参考答案：B
假如要考订中草药曼陀罗花的麻醉效用，应查阅的古代医书是[ ]
A．《千金方》
B．《本草纲目》
C．《天工开物》
D．《农政全书》
Originally introduced by Netscape Communications, (1) are a general mechanism which HTTP Server side applications, such as CGI (2) , can use to both store and retrieve information on the HTTP (2) side of the connection. Basically, Cookies can be used to compensate for the (4) nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based (5) .
A. programs B. applications C. frameworks D. constrains
