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【单选题】
终身教育”的思想是由( )提出来的
A.
杜威
B.
保罗.朗格朗
C.
布鲁纳
D.
奥苏贝尔
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参考答案:
举一反三
【单选题】在下列叙述中,错误的是
A.
保守力做正功时相应的势能将减少
B.
势能是属于物体体系的
C.
势能是个相对量,与参考零点的选择有关
D.
势能的大小与初、末态有关 , 与路径无关
【简答题】– Qu’est-ce qu’elle fait, ta ______ ? – Elle est étudiante de médecine. (6.2分)A. cousin B. cousine C. grand-mère
【单选题】Qu'est-ce qu'elle apprend(学习) ?
A.
Elle apprend l'anglais(英语).
B.
Elle apprend le chinois.
C.
Elle apprend le français.
D.
Elle apprend le japonais.
【简答题】若要计算某一个同学的成绩在班级的排名,则应使用_______函数。
【多选题】关于保守力做功,下列叙述错误的是
A.
从空间一点到另一点保守力所做的功与路径无关
B.
做功的路径如果回到原来的出发点,则保守力所做总功为零
C.
物体在保守力场中运动其动能是守恒的
D.
在保守力场中物体的运动满足功能关系
E.
通过 可以计算任意保守力做的功
F.
物体在保守力场中运动其动能一定会发生变化
G.
保守力随空间位置变化,因此它做的功是空间位置的函数
【多选题】How does nonhomologous end joining (NHEJ) repair DNA double-strand breaks in eukaryotes?
A.
The reaction is initiated at the broken ends of a double-strand break by the binding of a heterodimer consisting of the proteins Ku70 and Ku80. The Ku proteins are conserved in almost all eukaryotes and act as a kind of molecular scaffold to assemble the other protein components.
B.
Ku70-Ku80 interacts with another protein complex containing a protein kinase called DNA-PKcs and a nuclease known as Artemis. Once the complex is assembled, the two broken DNA ends are synapsed (held together). DNA-PKcs autophosphorylates in several locations and also phosphorylates Artemis.
C.
Artemis, when phosphorylated, acquires an endonuclease function that can remove 5′ or 3′ single-stranded extensions or hairpins that might be present at the ends. The DNA ends are then separated with the aid of a helicase, and strands from the two different ends are annealed at locations where short regions of complementarity are encountered.
D.
Artemis cleaves any unpaired DNA segments that are created. Small DNA gaps are filled by a DNA polymerase, Pol μ or Pol λ. Finally, the nicks are sealed by a protein complex consisting of XRCC4 (X-ray cross complementation group), XLF (XRCC4-like factor), and DNA ligase IV.
【简答题】在死亡边缘的患者 BLS 的初期黄金时刻是 4 分钟 , 生命链的内容包括是: 等。
【简答题】Zeus was the child of Cronus and Rhea, and the youngest of his s_______(1) . In most traditions he was married to Hera, although, at the o_______(2) of Dodona, his consort was Dione: according to the ...
【单选题】在下列关于势能的叙述中,错误的是
A.
保守力做正功时相应的势能将减少。
B.
势能是属于物体体系的。
C.
势能是个相对量,与参考零点的选择有关。
D.
势能的大小与初、末态有关 , 与路径无关。
【单选题】风味发酵乳中牛乳或复原乳含量要在多少以上
A.
60%
B.
70%
C.
80%
D.
90%
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