工程量清单中有标价的单价和总额价均已包括了为实施和完成合同工程所需的劳务、材料、机械、质检（自检）、安装、缺陷修复、管理、保险、税费、利润等费用，不包括未明示的责任、义务和一般风险。（注：包括合同明示或暗示的所有责任、义务和一般风险。）
防风类
油井结蜡中起关键作用的因素是哪种（） ["含蜡量","温度","压力"]
儿童在游戏中所反映的现实生活中事物或现象的范围规定。它构成游戏的内核，这一概念被称为（） ["游戏内容","游戏形式","游戏规则","游戏主题"]
Which two are true about aggregate functions?（） [" You can use aggregate functions in any clause of a SELECT statement."," You can use aggregate functions only in the column list of the SELECT clause and in the WHERE clause of a SELECT statement."," You can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns."," You can pass column names, expressions, constants, or functions as parameters to an aggregate function."," You can use aggregate functions on a table, only by grouping the whole table as one single group."," You cannot group the rows of a table by more than one column while using aggregate functions."]
变压器常见的故障有哪些？
