盐析法分离蛋白质的原理是( )A.破坏蛋白质的一级结构B.破坏蛋白质的二级结构C. 发布时间:2018-01-10 18:40 │ 来源:www.tikuol.com 题型:单项选择题 问题: 盐析法分离蛋白质的原理是( )A.破坏蛋白质的一级结构B.破坏蛋白质的二级结构C.破坏蛋白质水化膜而改变溶解度D.使蛋白质发生变性沉淀E.使蛋白质电荷发生改变
题型:单项选择题 Object-oriented analysis (OOA) is a semiformal specification technique for the object-oriented paradigm. Object-oriented analysis consists of three steps. The first step is (71) . It determines how the various results are computed by the product and presents this information in the form of a (72) and associated scenarios. The second is (73) , which determines the classes and their attributes. Then determine the interrelationships and interaction among the classes. The last step is (74) , which determines the actions performed by or to each class or subclass and presents this information in the form of (75) .(71)处填()。A.use-case modelingB.class modelingC.dynamic modelingD.behavioral modeling 查看答案
题型:单项选择题 材料一:某县公路局在修建公路时,在未经当事人同意的情况下,占用并毁坏了万某种植的西红柿两亩多土地,后来象征性地给了万某200元的赔偿。万某多次找政府有关部门讨个说法,但始终未果。材料二:加强对权力的制约和监督是我们党和政府近年来一直着力解决的问题,更是亿万中国人民最关注的制度建设和社会问题之一。要防止滥用权力,就必须以权力制约权力。为什么要对政府权力进行制约和监督?(6分)当前我国采取了哪些有效途径来制约和监督政府公共权力?(6分) 查看答案