采暖管道冻裂主要采取的防治措施是()。A.严防管道堵塞 B.试压后立即排管中积水 C 发布时间:2020-02-07 23:12 │ 来源:www.tikuol.com 题型:多项选择题 问题: 采暖管道冻裂主要采取的防治措施是()。A.严防管道堵塞B.试压后立即排管中积水C.严格遵循设计坡度D.加强保温
题型:多项选择题 – James didn’t ____ last night, did he?– No. He ____. We had changed our plan.A.turn away; shouldn’t have comeB.turn up; needn’t have comeC.turn up; didn’t need to comeD.turn away; doesn’t need to come 查看答案