取保候审中，保证人应当履行的义务是（） ["缴纳保证金","监督被保证人遵守取保候审期间应遵守的规定","发现被保证人可能发生或者已经发生违反规定的行为的，应当及时向执行机关报告","提供证人证言"]
Windows Communication Foundation （WCF） application uses a data contract that has several data members. You need the application to throw a Serialization Exception if any of the data members are not present when a serialized instance of the data contract is deserialized. What should you do？（） [" Add the Known Type attribute to the data contract.Set a default value in each of the data member declarations."," Add the Known Type attribute to the data contract.Set the Order property of each data member to unique integer value."," Set the Emit Default Value property of each data member to false."," Set the Is Required property of each data member to true."]
事实婚姻的处理
简述成本会计任务包括的内容。
水泵接合器的安装要求正确的是（）。 ["水泵接合器接口距室外消火栓或消防水池的距离宜为10～40m","墙壁水泵接合器安装高度距地面宜为0.7m","墙壁水泵接合器与墙面上的门、窗、孔、洞的净距离不应小于2.0m，且不应安装在玻璃幕墙下方","地下水泵接合器的安装，应使进水口与井盖底面的距离不大于0.4m，且不应小于井盖的半径","水泵接合器与给水系统之间不应设置除检修阀门以外其他的阀门"]
水轮机调节工作的实质是什么？
