某岩石饱和单轴抗压强度为2.1MPa,干燥状态单轴抗压强度为3.2MPa,该岩石可称 发布时间:2017-08-07 22:02 │ 来源:www.tikuol.com 题型:单项选择题 问题: 某岩石饱和单轴抗压强度为2.1MPa,干燥状态单轴抗压强度为3.2MPa,该岩石可称为()。A.软化岩石B.易溶性岩石C.膨胀性岩石D.崩解性岩石
题型:单项选择题 her, wash, plenty, sport, health It’s important for us to keep fit. Li Mei gives us a good example(榜样). She always does more exercise. She loves ____小题1:____ like swimming, running and playing tennis. She goes to bed at 10 at night and gets up at 6 in the morning. She looks after _____小题2:____ . she has a bath(洗澡) every day and _____小题3:____ her hands before meals. When she has meals, she eats different kinds of ___小题4:______ food like fish, eggs and vegetables. She also eats ___小题5:__ of fruit. So she looks fit and pretty. 查看答案
题型:单项选择题 下列关于闭塞性周围动脉粥样硬化的叙述中,错误的是()A.好发于男性B.好发于青年人C.好发于下肢动脉D.与冠心病一样有高血压、高血脂等危险因素E.行走疼痛-休息-缓解是其病程中一个典型的临床表现 查看答案
题型:单项选择题 为了研究物质某种特性,某同学测得四组数据,填在列表中:(1)将表①处填写完整.(2)比较第1、2两次实验数据,可得出结论:同一种物质,它的质量跟它的体积成_____;(3)比较第2、3两次实验数据,可得出结论:_______(填条件),体积越大,密度越小;(4)比较第1、4两次实验数据,可得出结论:_______(填条件),质量大的,密度大;(5)分析全部数据发现,对于不同物质来说,质量与体积的比值不同,我们把物质的这种特性叫做物质的_________,铝的密度是2.7g/cm3它的物理含义是_________ 查看答案