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【简答题】
胆碱受体分为 和 受体,肾上腺素受体有 和 受体。
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反馈参考答案：
举一反三
【多选题】竞争的积极作用是
A.
有助于激发竞争主体的进取心
B.
有助于竞争主体客观地评价自我、扬长避短、展现才华、不断提高
C.
有助于推动社会的发展
D.
竞争可能使人们产生自卑感和挫折感
【多选题】竞争的积极功能具体体现为以下几个方面（）
A.
通过竞争可以实现价值规律的作用
B.
竞争对微观经济活动存在激励作用
C.
竞争对经济的宏观调控具有积极的作用
D.
竞争可以促进生产力的发展，实现社会经济的繁荣与进步
【单选题】Which of the following is NOT an excuse some people make for denying their responsibility?
A.
They went with the stream.
B.
They were misled by others.
C.
They were forced to do it.
D.
Other people should bear the blame.
【简答题】What do you eat every day? Some people think about it. And some people will not make plans for their meals. Many people like to have fast food near their offices. This kind of food can make them fat a...
【简答题】在轴的初步计算中,轴的直径是按 进行初步确定的。
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