凝汽器的真空度与汽机循环效率的关系是怎样的？凝汽器的真空度是不是越高越好？
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安全事故隐患处理完毕，（）应组织人员检查验收，自检合格后报监理工程师核验。
A. 建设单位
B. 检测单位
C. 施工单位
D. 监理单位
如果温度变送器出现温度示值偏低或不稳故障现象时可能的原因是什么？处理方法？
What action should you be prepared to take when verifying a security solution？（）
A. having alternative addressing and VLAN schemes
B. having a rollback plan in case of unwanted or unexpected results
C. running a test script against all possible security threats to insure that the solution will mitigate all potential threats
D. isolating and testing each security domain individually to insure that the security design will meet overall requirements when placed into production as an entire system
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