在地下防水混凝土结构中，施工缝是防水薄弱部位之一。
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You have a server that runs windows server 2008. You need to configure the server as a VPN server. What should you install on the server?（）
A. Windows deployment services role and deployment server role service.
B. Windows deployment services role and deployment transport role service.
C. Network policy and access services role and routing and remote access services role service.
D. Network policy and access services and host credential authorization protocol role service.
现在娄底难产产假有几天啊？老婆上月生小孩属于难产。
下列属于公路建设市场信用信息中最高信用等级的是（）
AA级
B. A级
C. B级
D级
土坝护坡桩从坝脚线开始，沿坝坡面平行坝轴线布设，每排高差为（）m。
A. 3
B. 5
C. 6
D. 10
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