习近平总书记曾指出，中国是一个大国，决不能在根本性问题上出现颠覆性错误，一旦出现就无法挽回、无法弥补。
主动转运和被动转运的区别。
VOIP is being implemented on the Company network. In a properly designed network， what is the maximum amount of time a voice package should spend crossing a network？ （） ["90 milliseconds","120 milliseconds","150 milliseconds","240 millisecond"]
You are an administrator of a small business network. You have one dial-up account at an ISP and want all computers on your network connect to the Internet. What should you do？ （） ["Enable Internet Connection Sharing","Enable on-demand dialing","Enable sharing a modem on one computer on the network","Configure a DHCP Server","Disable Internet Connection Sharing"]
刺剪创的特点（）。 ["创口呈大小一致、距离相等两两相对的瓜子形","创口呈“S”状","创口呈两个略错位的半圆形","创口呈条状或“V”字形"]
前三头政治
