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公安等国家应急系统主要采用（）卫星通信站和（）卫星通信站两种通信方式。

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经后小腹隐痛，阴部空坠，月经量少，色淡，质稀，神疲乏力，中医辨证为（）

A. 气血虚弱
B. 肝肾虚损
C. 阳虚内寒
D. 气滞血瘀
E. 寒湿凝滞

（）指对发输变配电生产设备的预防性试验和定期检验及测量设备、安全工器具、施工工器具等检验工作发生的费用

A. 修理项目
B. 试验检验项目
C. 委托运行项目
D. 技改项目

某厂检修车间要检修厂房内距离地面高度约2.5米左右的阀门，检修人员检修阀门的工作为高处作业，高处作业一般有哪些注意事项，以防止检修人员高空坠落和落物伤人？

You have an Exchange Server 2010 organization that consists of 50 Exchange Server 2010 servers. Your companys security policy states that approved Exchange and Windows Server patches and securityupdates must be applied to all Exchange servers within one week of being released. You need to recommend a patch management solution that meets the following requirements： .Allow administrators to manually approve patches and security updates .Allow only the installation of approved patches and security updates .Minimize the administrative effort to deploy patches .Minimize the deployment costs What should you include in the solution？（）

A. Microsoft Update
B. Microsoft System Center Configuration Manager
C. Windows Server Update Services
D. Windows Update