【单选题】The midpoint of the temperature range over which denaturation of proteins occurs is called the ________ temperature, or T m .
【单选题】As shown in the figure, the temperature increases t1 above the beam and decreases t2 below the beam, and t1 < t2.The displacement of points C and D are:【图片】
C.
C goes up and D goes down
D.
C goes down and D goes up
【单选题】If a cup of coffee has temperature 95 celsius in a room where the temperature is 20 celsius, Conan found that the temperature of coffee after t minutes can be simulated by the following function What...
【单选题】Melting temperature (T m ): the temperature at which about____of the dsDNA is disassociated into the single-stranded DNA.
【判断题】变性的目的是使模板DNA双链或经PCR扩增形成的双链DNA解离,使之成为单链
【简答题】In the summer, the wind current will be reversed because the temperature of the air over the land turns higher than ______.
【单选题】There is a kind of ideal gas in a container with unchangeable volume. When the temperature is at T0 the average speed of the gas molecule is【图片】, the average munber of collisions of molecules is【图片】 a...
【简答题】案例:一个外国人要求在非公交站点下车,要求没有得到满足后,他骂了一句“ Chinese pig ”,还用塑料袋掷工作人员。全车的人都愤怒了,但工作人员“始终笑脸相迎”。这件小事见报后,引起了关于“爱国”的激烈争论。大多数人认为工作人员应该以牙还牙、当场还击,捍卫人格和国格尊严。少部分国民比较冷静,认为当场还击并不能维护人格和国格尊严,因为它们不是靠“骂”、“打”等不文明的方式来赢得或维护的,而是靠...
【单选题】苏格拉底曾经和美诺一起讨论什么是“美德”。美诺分别讲了男人、女人、老人和青年人的美德各是什么。苏格拉底认为,这只是具体的美德,而不是哲学的回答。苏格拉底认为应该从对具体“美德”的概括中抽象出美德的共性。这表明() ①哲学是研究世界上万事万物共同的本质和规律的 ②哲学思维通过理性思考,从个性中归纳综合出事物共同的本质 ③哲学是对具体科学知识的正确的概括和总结 ④哲学是人们对具体领域的根本观点