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【单选题】
普萘洛尔 对下列哪一种 心律失常无效
A.
心动过速
B.
室上性心动过速
C.
心房纤颤
D.
房室传导阻滞
E.
心房扑动
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A.
正确
B.
错误
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A.
中性粒细胞
B.
嗜酸性粒细胞
C.
浆细胞
D.
淋巴细胞
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A.
Because they are told only talent, energy and personality are necessary to success.
B.
Because they are confused by the success of some people of unsound character.
C.
Because they no longer pay attention to inner values.
D.
Because they can't understand why successful people also conunit crimes.
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A.
正确
B.
错误
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A.
5- 羟色胺
B.
PGE
C.
组胺
D.
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【单选题】在过敏性炎症中引起嗜酸性粒细胞浸润的主要为()
A.
5-羟色胺
B.
PGE
C.
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D.
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【单选题】嘌呤霉素抑制蛋白质生物合成的机制是
A.
抑制氨基酰-tRNA合成酶的活性,阻止氨基酰-tRNA的合成
B.
其结构与酪氨酰-tRNA相似,可和酪氨酸竞争与mRNA结合
C.
抑制转肽酶活性
D.
可与核糖体大亚基受位上的氨基酰-tRNA形成肽酰嘌呤霉素
E.
可与给位上的肽酰-tRNA形成肽酰嘌呤霉素
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