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【单选题】
()是中国特色企业文化的特征之一
A.
发展的不平衡性
B.
团结合作
C.
提升职工素质
D.
竞争意识
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【单选题】_____________ rely on ___________, such as Ca2+, cyclic GMP, phosphatidylinositol, and cyclic AMP, to activate (or inactivate) a variety of pathways within the cell.
A.
Intracellular receptors; ligands
B.
G-protein-coupled receptors; second messengers
C.
enzyme-linked receptor; G-proteins
D.
G-protein-coupled receptors; G-proteins
【多选题】下列关于非竞争性抑制的叙述正确的是
A.
与酶活性中心以外的其他位点结合
B.
可干扰酶和底物的结合
C.
底物与抑制剂之间不存在竞争关系
D.
抑制作用的强弱取决于抑制剂的浓度
E.
不能通过增加底物浓度减弱抑制作用
【简答题】Excessive sugar has a strong mal-effect on the functioning of active【46】o______such as the heart, kidneys and the brain. Shipwrecked sailors who ate and drank nothing but sugar for nine days surely we...
【单选题】将记帐凭证分为收款凭证,付款凭证和转帐凭证三种,这是按照其( )不同来划分的.
A.
填列方式
B.
反映的经济业务内容
C.
基本要求
D.
记帐凭证的编号
【单选题】试从下列选项中选择 合适的 试剂,除去括号中的杂质。 FeCl 2 溶液 (FeCl 3 )
A.
氯水
B.
【判断题】当尖角附近有产品,或尖角的内侧和外侧都是产品时,也可以设计超程轨迹切割。
A.
正确
B.
错误
【简答题】You should spend about 20 minutes on Questions 14-26 which are based on Reading Passage 2 below. Saving bugs to find new drugs Zoologist Ross Piper looks at the potential of insects in pharmaceutical ...
【简答题】It has long been recognized both home and abroad that traditional Chinese arts, such as calligraphy, painting, opera, and literature are glaring with beauty and excellence. In recent years, however, m...
【简答题】The induced fit hypothesis suggests that the binding of the substrate to the enzyme alters the structure of the enzyme, placing some strain on the substrate and further facilitating thereaction. Cofac...
【简答题】In English, the phoneme/p/is pronounced differently in words such as pat, spat, or tap. Can you form. a rule that can generalize this linguistic phenomenon?(南开大学2010研)
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