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胶基糖果的主要特性有哪些？它有哪几类？试举一例说明。

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爆破后，必须通风排烟（）以后检查人员方可进入工作面检查，爆破后必须先进行残炮检查和找顶作业。

A. 15分钟
B. 30分钟
C. 60分钟
D. 120分钟

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根据《移动通信工程钢塔桅结构设计规范》（YD/T5131—2005），移动通信工程钢塔桅结构设计安全等级为（）级。

A. 1
B. 2
C. 3
D. 4

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Cer-tech .com has a server that runs Windows Server 2008. You have installed the Web Server （IIS） roleon it. Cer-tech plans to host multiple websites on the server. To achieve this you configure a single IPaddress on the server. You also configure all websites to be registered in DNS to point to the single IP address configured on the server. You have to make sure that each and every website responds only to thename requests from all client machines. What should you do to achieve this task？（）

A. Configure the primary and secondary DNS to point to the server’s IP address
B. Configure a network address for each website
C. Assign a unique port for each website
D. Configure and assign a unique Host Header to each website

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规范的大堂经理接待流程包括（）

A. 问候客户
B. 识别客户
C. 引导分流客户
D. 礼貌送别客户

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