选择题：一级管网的现场安装的接头密封应进行（ ）％的气密性检验，二级管网的现场安装的接头密封应进行不少于（ ）％的气密性检验。

共用题干 Voice Your Opinion一Change is Needed in Youth SportsEverywhere you look, you see kids bouncing a basketball or waving a tennis racquet（网球拍）.And these kids are getting younger and younger. In some countries,children can compete on basketball, baseball

某二级公路路基出现了网裂病害，下列关于其原因分析错误的是（　）。 A、土的塑性指数偏高或为膨胀土 B、路基碾压时土含水量偏大，且成型后未能及时覆土 C、路基压实后养护不到位，表面失水过多 D、路基下层土过干

金融行动特别工作组(FATF)于()年7月根据西方七国集团的经济宣言建立,是目前全球最有影响的专

共用题干 1.On November 19,1863,Abraham Lincoln went to Gettysburg in Pennsylvania to speak at the National Soldiers Cemetery.The Civil War was still going on.There was much criticism of President Lincoln at the time.He was not at all popular. He had been inv

城市热力管道焊接质量检验有（　）。 A、对口质量检验 B、表面质量检验 C、渗透探伤检验 D、无损探伤检验 E、强度和严密性试验