用户要想在网上查询WWW信息，必须安装并运行的软件是( )。
A．HTTP
B．Yahoo
C．浏览器
D．万维网
参考答案：C
单室模型多剂量静脉注射给药首剂量与维持剂量的关系式（）.
A.A
B.B
C.C
D.D
E.E
What is suggested for your investment
A．Distributing your money among different companies.
B．Investigating the company before investment.
C．Don’t invest all your money.
D．Comparing different companies before investment.
