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【简答题】
指示酶和辅助酶选择的依据是什么?
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【简答题】宝石光谱的鉴定意义 :
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【简答题】下图是四线制道岔控制电路(室内部分),根据该电路回答问题: (1) 由图可知, 1DQJ 、 2DQJ 和 DBJ 分别是什么类型的继电器? (2) 在 1DQJ 的 3-4 线圈上接有 SJ 和 CA ,其分别起什么作用? DBJ 和 FBJ 都并联有电容 C ,电容 C 起何作用? (3) 在图上用粗线画出单操道岔到反位时, 1DQJ 、 2DQJ 和 FBJ 的励磁电路。
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【单选题】DBJ、FBJ是什么类型的继电器
A.
无极继电器
B.
有极继电器
C.
偏极继电器
D.
整流继电器
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【简答题】使用转义字符,用cat()函数在控制台中打印出下列各式的输出。 To have a \ you need \\ This is a really really really long string
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【判断题】有哮喘病史的老年人的居室环境布置要避免花草、地毯、不养宠物，枕头内不宜填塞羽绒等。
A.
正确
B.
错误
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【多选题】What are the respiratory enzyme complexes ?
A.
The three respiratory enzyme complexes, in the order in which they receive electrons, are (1) NADH dehydrogenase complex, (2) cytochrome c reductase complex, and (3) cytochrome c oxidase complex.
B.
Each complex contains metal ions and other chemical groups that act as stepping stones to enable the passage of electrons through the complex.
C.
The movement of electrons through these respiratory complexes is accompanied by the pumping of protons from the mitochondrial matrix to the intermembrane space.
D.
Thus each complex can be thought of as a proton pump.
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【多选题】Which of the following statements about enzyme cofactors are correct?
A.
Many of the reactions within these five classes are facilitated by cofactors, in the form of coenzymes and metal ions (vitamin B 12 , S–adenosylmethionine, folate, nicotinamide, and Fe 2+ are some examples).
B.
Cofactors bind to enzymes—in some cases reversibly, in other cases almost irreversibly—and give them the capacity to promote a particular kind of chemistry.
C.
Most cofactors participate in a narrow range of closely related reactions.
D.
The cofactors provide another way to organize the study of biochemical processes, given that the reactions facilitated by a given cofactor generally are mechanistically related.
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【简答题】Explain the following professional terms. 1) anionic polymerization 2) cationic polymerization 3) coordination polymerization 4) live polymerization 2. In anionic polymerization, from nonpolar to...
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【单选题】党权派系化的后果包括()。
A.
党内人才资源日益枯竭
B.
妨碍国民党组织力量的扩张
C.
两者都是
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【简答题】Research has shown that certain minerals are required by plants for normal growth and development. The soil is the source of these minerals, which are absorbed by the plant with the water from the soi...
查看完整题目与答案
相关题目：
【简答题】宝石光谱的鉴定意义 :
查看完整题目与答案
【简答题】下图是四线制道岔控制电路(室内部分),根据该电路回答问题: (1) 由图可知, 1DQJ 、 2DQJ 和 DBJ 分别是什么类型的继电器? (2) 在 1DQJ 的 3-4 线圈上接有 SJ 和 CA ,其分别起什么作用? DBJ 和 FBJ 都并联有电容 C ,电容 C 起何作用? (3) 在图上用粗线画出单操道岔到反位时, 1DQJ 、 2DQJ 和 FBJ 的励磁电路。
查看完整题目与答案
【单选题】DBJ、FBJ是什么类型的继电器
A.
无极继电器
B.
有极继电器
C.
偏极继电器
D.
整流继电器
查看完整题目与答案
【简答题】使用转义字符,用cat()函数在控制台中打印出下列各式的输出。 To have a \ you need \\ This is a really really really long string
查看完整题目与答案
【判断题】有哮喘病史的老年人的居室环境布置要避免花草、地毯、不养宠物，枕头内不宜填塞羽绒等。
A.
正确
B.
错误
查看完整题目与答案
【多选题】What are the respiratory enzyme complexes ?
A.
The three respiratory enzyme complexes, in the order in which they receive electrons, are (1) NADH dehydrogenase complex, (2) cytochrome c reductase complex, and (3) cytochrome c oxidase complex.
B.
Each complex contains metal ions and other chemical groups that act as stepping stones to enable the passage of electrons through the complex.
C.
The movement of electrons through these respiratory complexes is accompanied by the pumping of protons from the mitochondrial matrix to the intermembrane space.
D.
Thus each complex can be thought of as a proton pump.
查看完整题目与答案
【多选题】Which of the following statements about enzyme cofactors are correct?
A.
Many of the reactions within these five classes are facilitated by cofactors, in the form of coenzymes and metal ions (vitamin B 12 , S–adenosylmethionine, folate, nicotinamide, and Fe 2+ are some examples).
B.
Cofactors bind to enzymes—in some cases reversibly, in other cases almost irreversibly—and give them the capacity to promote a particular kind of chemistry.
C.
Most cofactors participate in a narrow range of closely related reactions.
D.
The cofactors provide another way to organize the study of biochemical processes, given that the reactions facilitated by a given cofactor generally are mechanistically related.
查看完整题目与答案
【简答题】Explain the following professional terms. 1) anionic polymerization 2) cationic polymerization 3) coordination polymerization 4) live polymerization 2. In anionic polymerization, from nonpolar to...
查看完整题目与答案
【单选题】党权派系化的后果包括()。
A.
党内人才资源日益枯竭
B.
妨碍国民党组织力量的扩张
C.
两者都是
查看完整题目与答案
【简答题】Research has shown that certain minerals are required by plants for normal growth and development. The soil is the source of these minerals, which are absorbed by the plant with the water from the soi...
查看完整题目与答案