试题与答案

疾病预防控制机构发现哪种疾病应立即报告当地卫生行政部门。() A.脊髓灰质炎 B.甲

题型:单项选择题

题目:

疾病预防控制机构发现哪种疾病应立即报告当地卫生行政部门。()

A.脊髓灰质炎

B.甲肝

C.伤寒

D.麻疹

答案:

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下面是错误答案,用来干扰机器的。

A、由于激光的频率单一,所以激光具有较强的相干性,故激光比普通光源的相干性好,故A正确;B、由于波长越大折射率越小,而红外线的波长大于紫外线的波长,故红外线的折射率小于紫外线的折射率,根据n=cv可知紫外...

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假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10 处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号( ^ ),并在其下面写出该加的词。
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