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简述颜料在涂料中的作用。

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Your company has a branch office that contains a Windows Server 2008 R2 server. The server runs Windows Server Update Services （WSUS）. The company opens four new satellite offices. Each satellite office connects to the branch office by using a dedicated WAN link. You need to design a strategy for patch management that meets the following requirements： èWSUS updates are approved from a central location. èWAN traffic is minimized between the branch office and the satellite offices. What should you include in your design？（）

A. In each satellite office， install a WSUS server. Configure each satellite office WSUS server as a replica of the branch office WSUS server.
B. In each satellite office， install a WSUS server. Configure each satellite office WSUS server as an autonomous server that synchronizes to the branch office WSUS server.
C. On the branch office WSUS server， create a computer group for each satellite office. Add the client computers in each satellite office to their respective computer groups.
D. For each satellite office，create an organizational unit（OU）.Create and link a Group Policy object（GPO）to each OConfigure different schedules to download updates from the branch office WSUS server to the client computers in each satellite office.

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什么是多发性硬化(MS)?

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可产生严重耳毒性的是（）

A. 青霉素
B. 氯霉素
C. 红霉素
D. 灰黄霉素
E. 庆大霉素

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患者，女性，45岁。有心肌缺血病史，经治疗后几年来一直健康。近日突然出现心慌、气短，数分钟后自然缓解，每日发作数次，发作时常伴有心绞痛症状。经心电图检查认为阵发性室上性心动过速，此时最好选用（）

A. 普鲁卡因胺
B. 硝苯地平
C. 维拉帕米
D. 索他洛尔
E. 普罗帕酮

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