第8题: [单项选择]John has {{U}}made up his mind{{/U}} not to go to the meeting. A. wanted B. promised C. decided D. agreed 参考答案:C 答案解析:make up one's mind:打定主意,下定决心。又如:Susan has made up her mind that, come what may, she will stay with J
第14题: [单项选择]氧化锆分析仪测量的准确度约在() A. ±1%~2% B. ±7%~8% C. ±5%~7% D. ±3%~5% 参考答案:D
第15题: [单项选择]某施工单位承接一住宅小区给水排水工程,给水干管采用衬塑钢管沟槽连接,给水支管采用PPR管道热熔连接,阀门DN50以上采用蝶阀,DN50以下采用铜截止阀;排水管道排出管采用承插排水铸铁管,立管采用螺旋消音UPVC管,横支管采用普通UPVC管;雨水管道采用内排雨水,管道材质为镀锌钢管;采暖为市政直接供暖,管道采用焊接钢管,暖气片选用四柱型。排水管检查口的高度距离地面以()为宜。 A. 0.9m B. 1.0m C. 1m D. 1.2m 参考答案:A