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【单选题】
下列哪项属于I型反应
A.
过敏性休克
B.
输血反应
C.
链球菌感染后肾炎
D.
药物过敏性血细胞减少症
E.
接触性皮炎
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【判断题】共产主义作为思想,从《共产党宣言》起就已经存在。( )
A.
正确
B.
错误
【简答题】对于函数f(x),如果存在一点c,使得f(c)=c,则称c为f(x)的不动点. (1)作出一个定义域与值域均为[0,1]的连续函数的图形,并找出它的不动点; (2)利用介值定理证明:定义域为[0,1],值域包含于[0,1]的连续函数必定有不动点.
【简答题】两种菌落的特征: 比较项目 细菌 真菌 大小 ① 比细菌大几倍到几十倍 形态和颜色 表面② (具荚膜的肺炎球菌)或③ (不具荚膜的细菌)。多呈④ 。 呈⑤ ,有时呈现⑥ 等不同颜色
【简答题】Passage 2 What should you thinkabout in trying to find your career? You are probably better atsome school subjects than others. These may show strengths that you can use inyour work. A boy who is good...
【简答题】What should you think about when trying to find your career? You are probably better at some school subjects than others. These may show strengths that you can use in your work. A boy who is good at m...
【判断题】共产主义作为思想,从《共产党宣言》起就已经存在。
A.
正确
B.
错误
【单选题】Who may probably use “maybe” when they mean “no” for the sake of face saving?
A.
Black Americans.
B.
West Europeans.
C.
East Asians.
D.
Latin Americans.
【简答题】如果数列 同时满足:(1)各项均不为 ,(2)存在常数k, 对任意 都成立,则称这样的数列 为“类等比数列” .由此等比数列必定是“类等比数列” .问: (1)各项均不为0的等差数列 是否为“类等比数列”?说明理由. (2)若数列 为“类等比数列”,且 (a,b为常数),是否存在常数λ,使得 对任意 都成立?若存在,求出λ;若不存在,请举出反例. (3)若数列 为“类等比数列”,且 , (a,b为...
【简答题】What should you think about in trying to find your career? You are probably better at some school subjects than others. These may show strengths that you can use in your work. A boy who is good at mat...
【简答题】What should you think about when trying to find your career? You are probably better at some school subjects than others. These may show strengths that you can use in your work. A boy who is good at m...
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