下列哪个选项不属于党员领导干部在该事项操作过程中可能存在优亲厚友、显失公平的行为。（） ["社会保障","社会保险","救灾救济款物分配","政策扶持"]
我国工业用电电压（）伏。 ["220","110","380"]
连带清偿责任
A developer is designing the presentation tier for a web application which requires a centralized requesthandling to complete common processing required by each request. Which design pattern provides asolution to this problem？（） ["Remote Proxy","Front Controller","Service Activator","Intercepting Filter","Business Delegate"]
帮助台无须确保用户和客户的每个请求不会被丢失、忘记或忽略。
在调查法中，依据所收集到的资料是否具有量化特征，将调查方法分为（）调查和（）调查。
