当平均气温在()或最低气温在()时,浇筑混凝土应采取冬季作业。 A.低于5℃、低于- 发布时间:2018-03-17 23:45 │ 来源:www.tikuol.com 题型:单项选择题 问题: 当平均气温在()或最低气温在()时,浇筑混凝土应采取冬季作业。A.低于5℃、低于-3℃B.4℃、-4℃C.6℃、-2℃D.6℃、-3℃
题型:单项选择题 The lady _____ dancing as a hobby in her sixties, and she is really good at it now.A.dressed upB.looked upC.took upD.put up 查看答案
题型:单项选择题 InlimitedtestAforarsenic,whattestagentshouldbepreparedaccordingtoBP(1993edition)A.mercurybromidesolutionB.sodiumhydroxideC.SandbathD.PotassiumcarbonateE.standardSolution 查看答案