对某一施工现场进行高程测设，M点为水准点，己知高程为12.00m；N点为待测点，安置水准仪于M，N之间，先在M点立尺，读得后视读数为4.50m，然后在N点立尺，读得前视读数为3.50m，N点高程为（）m。 ["11.00","12.00","12.50","13.00"]
差动保护用的变流器应按什么条件检验10%误差,如超差应采取哪些措施?
J-2签证签发给（）。 ["来华常驻的外国记者","我国新闻机构常驻外记者","临时来华采访的外国记者","我国新闻机构临时外派出境采访的记者"]
Your network contains an Active Directory forest. The forest contains a single domain named contoso.com. The domain contains four domain controllers. The domain controllers are configured as shown in the following table. You plan to deploy a new domain controller named DC5 in the contoso.com domain. You need to identify which domain controller must be online to ensure that DC5 can be promoted successfully to a domain controller. Which domain controller should you identify？（） ["DC1","DC2","DC3","DC4"]
在使用PiCCO导管监测前，需要向体内注入冰盐水进行校正，注入冰盐水的途径是：（） ["灌肠","胃管注入","动脉导管注入","外周静脉导管注入","中心静脉导管注入"]
晶胞
