题目内容

下列哪种受体属于G蛋白偶联受体?()

A.胰岛素受体
B.生长因子受体
C.N-乙酰胆碱受体
D.α-肾上腺素受体
E.神经生长因子受体

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受体与配体结合的特点包括()。

A.高度专一性
B.高度亲和力
C.可饱和性
D.可逆性
E.可通过磷酸化和去磷酸化进行调节

选词填空,必要时改变形式:challengeinspirevaluecontactdesperatecheerfuluncaringbattle1. One of the most ________ aspects of coping with illness is the unpredictable nature of many conditions and the uncertainty.2. As she repeated the same message over and over, she could hear the growing _______ in her voice, but she could do nothing to control it.3. People are more alert, focused, and even ______ after chewing gum, according to a study from Cardiff University in Wales.4. Now, too frequently, style and technique seem to be _______ over powerful story telling in TV production.5. The website allows people to _______ me directly about my editing and mentoring services.6. It is so ______ that so many people feel moved to come out and express themselves.

简述碳纤维复合材料的主要类型。

单位时间内的渗出水量q与土的断面积A和水力梯度i成(),且与土的透水性质有关。

A. 正比
B. 反比
C. 没有关系
D. 不确定

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