【单选题】【消耗次数：1】
1.甲型肝炎对热及紫外线敏感，煮沸（ ）min，紫外线照射（ ）小时可灭活。
①
5，1
②
10，3
③
30，1
④
40，2
参考答案：
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【单选题】
使用紫外线灯消毒时紫外线强度不低于（）
①
50μW/cm<sup>2</sup>
②
60μW/cm<sup>2</sup>
③
70μW/cm<sup>2</sup>
④
80μW/cm<sup>2</sup>
【单选题】
阳光中的紫外线照射到皮肤上可生成( )。
①
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②
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③
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④
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随机题目
【单选题】
教师李某让班里调皮的学生缴纳违纪金，以加强班级管理，该教师的做法（）
①
A.合法，有助于维护班级秩序
②
B.合法，对其他人有警示作用
③
C.不合法，教师没有罚款的权利
④
D.不合法，学校才有罚款的权利
【单选题】
万老师教学很认真，经常辛辛苦苦从上课讲到下课，嗓门特别大，被同事戏称为“全天候广播员”，可教学效果一直不好，万老师需要反思的是（）
①
A.教学态度
②
B.教学方式
③
C.教学目的
④
D.教学条件
【单选题】
Our mother earth gives us ________we need in our daily life.
①
A. Everything
②
B.something
③
C.nothing
④
D.A.thing
【单选题】
My daughter bought me an IPAD,but I don’t know_____.
①
A.what to know
②
B.which one to use
③
C.when to use
④
D.how to use it