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患者女性，46岁，51kg。诊断为风湿性心脏病、二尖瓣狭窄，心功能Ⅲ级，拟行二尖瓣置换术。血压120／70mmHg；心电图示房颤，心室率75次／分。一直口服维持量地高辛。术前心超检查发现二尖瓣口面积为1cm，EF38％。经必要的术前准备后，择期在全麻复合浅低温体外循环下行二尖瓣置换术。入手术室建立常规监测，轻度头低位下行右颈内静脉穿刺，穿刺刚完成患者诉胸闷，随即咳出多量泡沫样痰，血压85／50mmHg，心电图示房颤，心室率130次／分，脉搏血氧饱和度83％。提示：患者二尖瓣置换手术经过顺利，主动脉开放后出现室颤，经二次胸内除颤后恢复窦性心律，20min后转为房颤心律，血压85／50mmHg，心室率128次／分。提问：下述哪些措施有助于该患者维持心肌氧供需平衡？（）
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某大型购物中心地上六层，地下一层，建筑高度为24m。该购物中心地下一层的主要使用功能为设备用房、物业管理用房和商业营业厅；其中，设备用房、物业管理用房区域建筑面积为2000m2，按建筑面积不大于1000m2划分为两个防、火分区；商店营业厅区域建筑面积为22000m2，采用不开设门窗洞口的防火墙分隔成10000m2和12000m2两部分，并采用下沉式广场将其局部连通，按建筑面积不大于2000m2划分为十一个防火分区。该购物中心地上一层至地上六层每层的使用功能均为商店营业厅，每层建筑面积均为20000m2，均按建筑面积不大于5000m2划分为四个防火分区。 请分析以上案例，回答下列问题： (1)该购物中心属于哪类建筑？ (2)用于防火分隔的下沉式广场等室外开敞空间，应符合哪些规定？
患者男，67岁，既往有原发性高血压史30年。因“持续性胸骨后疼痛1h”急诊入院。1h前患者午睡后出现胸骨后持续性刀割样疼痛，伴濒死感及大汗淋漓，含服速效救心丸10粒无缓解，“120”送入急诊抢救室。查体：T35.8℃，P108次/min，R21次/min，Bp120/90mmHg。心电图提示急性广泛前壁心肌梗死。在安放鼻导管吸氧的过程中突然出现面色发绀，抽搐，呼之不应，呼吸断续呈叹息样，双瞳孔直径约5mm，对光反射消失，颈动脉搏动消失。下一步的处理有（）（提示：患者经过CPR抢救约10min后，自主循环恢复，仍处于昏迷状态，频繁抽搐，自主呼吸浅促，Bp75/40mmHg。心电监护显示窦性心动过速，频发多源室性期前收缩，有时室性期前收缩成对出现；血气分析示：PaO255mmHg，PaCO225mmHg，FiO250%。）
You are employed as the Exchange administrator at Company.com.The Company.com network contains Exchange Server 2007 as well as Exchange Server 2010 Hub Transport server.You are responsible for managing the Exchange network for Company.com.You are in the process of creating a moderated distribution group named Research.A Company.com user named Rory Allen is assigned as the moderator of Research.During the course of the week Rory Allen informs you that certain e-mail messages delivered to members of the Research group does not have his approval.You need to make sure that only approved e-mail messages by Rory Allen are delivered to members of the Research group.What should you do？（）
You are the desktop administrator for your company. All users in the network have Windows XP Professional computers. Users in the research department have dual-processor computers. Users in the research department report that when they run 16-bit Windows programs, their computer performance becomes very slow. You use System Monitor to monitor the users’ computers. You discover that when the users are running their 16-bit applications, one processor shows a sustained utilization of more than 90 percent while the other processor only shows utilization of less than 10 percent. You need to improve application performance for the users in the research department. What should you do?（）
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