试题与答案

设置水过滤器的目的是什么?

题型:问答题 简答题

题目:

设置水过滤器的目的是什么?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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题型:完形填空
完形填空。
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( ) 2. A. at      
( ) 3. A. to make  
( ) 4. A. do      
( ) 5. A. doesn't
( ) 6. A. on      
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题型:单项选择题 案例分析题

电视剧《闯关东》中的场景:“主人公朱开山为了避免所种的庄稼遭受霜冻危害,在深秋的夜晚带领全家人及长工们在田间地头点燃了柴草……”结合大气受热过程示意图,回答问题。

关于图中a、b、c所代表的内容叙述正确的是()

A.a代表大气的直接热源

B.a、b、c所代表的辐射波长的大小关系是a<b<c

C.b代表的辐射主要被大气中的臭氧吸收

D.c代表的辐射与天气状况无关

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