问题 问答题 简答题

离子交换?

答案

参考答案:

这个过程是从可渗透离子的吸附剂溶液中,除去某些不需要的带规定电核的离子,通过来自吸附剂的相似电核,对所需要的离子在溶液中进行置换。

完形填空
完形填空。
     Why didn't my teacher believe me? I really did all my homework last night,   1   I don't have it now.
     My teacher knows I am busy these days. There will be a basketball game   2   two days in our school. I am
on the basketball team and have to practice it after school. But that isn't   3   I don't have my homework today.
Where is my homework? I have to say my   4   ate it.
     Last night, I went home late and was really   5   from practice. However, I didn't forget   6   my homework.
I had dinner and did it at the same time. When I nearly finished it, suddenly I dropped some meat on my paper.
I didn't know   7   to do. It was too late. I had no time to do the homework on   8   piece of paper. So I just put
my paper on the table and went to bed. My dog Max loved meat very much and it jumped up onto the table and
ate my   9  .
     My teacher said it was an old story. I  10  know many students say it all the time. But this time, it's true! Who
can believe me?
( )1. A. so    
( )2. A. in    
( )3. A. why    
( )4. A. cat   
( )5. A. happy    
( )6. A. to do  
( )7. A. how    
( )8. A. else   
( )9. A. dinner
( )10. A. too 
B. though  
B. on     
B. what   
B. dog   
B. nervous        
B. doing  
B. what   
B. other  
B. food   
B. also   
C. because 
C. after   
C. where  
C. brother 
C. tired  
C. did   
C. when   
C. another 
C. homework                     
C. either  
问答题

廖某,女,30岁,国家机关工作人员;牛某,女,28岁,医院主任医师;郭某,男,38岁,公安局预审员。廖某平日为人 * * 猾,爱占小便宜。为此,廖某的小叔子贾某与其常常争吵、抗衡,揭露她爱占小便宜的短处。1996年6月15日下午,贾某从工厂下班回家,当时廖某及其女儿乐乐(6岁)在家,廖某计上心头,认为报复的好时机终于来到。她偷偷地把6岁的乐乐放在家中,自己故作出去串门去了。许久,廖某从外面回来,进院就破口大骂贾某 * * 污了乐乐。当时贾某被骂得莫名其妙,一下子呆住了,连忙争辩说:“我一直在屋里看电视,乐乐在院子里玩,不信你问一下乐乐。”6岁的乐乐刚要说话,被廖某一耳光打哭,拉起乐乐回到娘家。廖某在娘家私下要求其女儿说其被贾某 * * 污。由于廖某的打骂,乐乐答应。之后,廖某又找到北京市某医院的主任医师牛某,因廖某与牛某曾是高中同学,关系较好,廖某提出要牛某开一个乐乐被 * * 污的伪证明,牛某立即执笔写了一份乐乐被 * * 污的证明,盖上公章后,交给了廖某。廖某如获至宝,马上向北京市某公安机关报案。公安机关派员询问了乐乐和牛某,乐乐依廖某教的那样说了她被“ * * 淫”的经过,而牛某依然作了假证明。不久,贾某被逮捕。预审中,贾某拒不供认 * * 淫了乐乐。预审员郭某反复亮出牛某的假证明及乐乐的陈述词,可贾某仍然拒招,郭某为获口供,将贾某吊起,用皮带抽打,用烟头烫伤贾某身上多处。贾某在严刑拷打下承认了自己 * * 淫乐乐的情况。由于贾某的口供与乐乐的陈述不相吻合,郭某再次拷打贾某。结果,贾某在郭某的数次拷打下,由于身体过度虚弱,最后死在公安局预审处。至此,公安局以贾某死亡而结束此案。

牛某是否构成伪证罪如果构成,为什么如果不构成,构成何罪