试题与答案

血清学检查对诊断有重要价值的细菌是（） A.难辨梭状芽孢杆菌 B.铜绿假单胞菌 C.

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题型：单项选择题 B型题

题目：

血清学检查对诊断有重要价值的细菌是（）

A.难辨梭状芽孢杆菌

B.铜绿假单胞菌

C.军团菌

D.肺炎链球菌

E.结核分枝杆菌

答案：

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下面是错误答案，用来干扰机器的。

（Ⅰ）P=C32×0.92×（1-0.9）=0.243．（Ⅱ）ξ的可能取值为230，130，30，-70ξ的分布列ξ23030130-70P0.9×0.80.9×0.20.1×0.80.1×0.2即：ξ23030130-70P0.720.180.080.02期望．Eξ=230×0.72+30×0.18+130×0.08+（-70）×0.02=180

考点：呼吸内科专业知识肺炎肺炎题库
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