医疗机构对抗菌药物供应目录应进行动态管理，应该（） A.清退存在安全隐患、疗效不确定

Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up (1) at the customer premise over slow (2) ports. PPP was designed to run directly over these serial links. But with the advent of broadband Internet (3) technologies such as ADSL and cable modems there has been a considerable increase in the bandwidth delivered to the end users. This means that the host computers at the customer premise connect to the (4) or cable "modem" over a much faster medium such as Ethernet. It also means that multiple (5) can connect to the Internet through the same connection.

（5）应填入（）

A．cables

B．hosts

C．servers

D．modems

男，24岁，反复上腹痛4年，常于秋冬换季时加重，饥饿时加重，餐后可缓解。

应首先考虑该患者为（）

A.胃癌

B.胃溃疡

C.十二指肠溃疡

D.慢性浅表性胃炎

E.慢性萎缩性胃炎

2.05÷0.46=______÷46，24.6÷6=0.246÷______．

使用苏通卡有何优惠？

除主要原因外，其它原因使Modem经常掉线有（）

A、如果56KModem在56K的速度下很容易掉线，可以把速度降低改善连接的速度和稳定性

B、在阅读已经下载完的网页时，如果没有传递任何其他数据，此时系统为了节约用户的上网费用，空闲超过一定时间后，自动断开连接而掉线

C、如果使用同一账号进行注册，当超过一定的用户连接数量之后，就会出现刚刚注册成功就发生掉线的故

D、病毒感染