下列对耳、肾毒性最低的是()。 A.链霉素 B.卡那霉素 C.庆大霉素 D.新霉素

题型:单项选择题 A1/A2型题

问题:

下列对耳、肾毒性最低的是()。

A.链霉素

B.卡那霉素

C.庆大霉素

D.新霉素

E.萘替米星

考点:基础知识社区用药社区用药题库
题型:单项选择题 A1/A2型题

阅读理解.

     Dave married (结婚) , and when his new wife saw the clothes in his cupboard(衣柜),she said ,

"Dave , you have only one good shirt. The others are very old ,and they have holes in them. I'm

going to buy you a new one this afternoon."

     Dave liked his old shirts ,but he loved his wife too, so he said "All right ,Mary ,but please don't

throw any of  the old ones away."

     Dave went to work ,and when he came back in the evening ,Mary said to him, "Look, Dave ,

I bought you a nice shirt. Here it is ,put it on."

     Dave put the shirt on , and then he said "Look at the sleeves(袖子) ,Mary. They are too long."

"That's all right ,"Mary answered "They will get shorter after I wash them."

     Then Dave said "Yes, you are clever."

1. Why did Mary want to buy Dave a new shirt?  

    ____________________________________       

2. Why didn't Dave like the sleeves of his new shirt?

     ___________________________________  

3. Why didn't Dave let his wife throw his old shirt away?

    ___________________________________

4. What did Mary say about the sleeves?

    ___________________________________         

5. Do you think Mary is clever?

   ___________________________________                                                                                    

题型:单项选择题 A1/A2型题
若a,b互为相反数,c,d互为倒数,m的绝对值是3,n在有理数王国里既不是正数也不是负数,求(
a+b
m
2008+m2-(cd)2009+n(a+b+c+d)的值.
题型:单项选择题 A1/A2型题

下图是初中常见物质间相互转化的关系图:

据上图关系回答:

(1)B的化学式为______,溶液H中溶质为______.

(2)反应②在日常生活中的作用______.

(3)写出反应①④的化学方程式:①______;④______.

题型:单项选择题 A1/A2型题

适应性障碍的特征不包括()

A.应激源常为日常生活中的应激性事件

B.适应能力不良的个体易患

C.病程一般不超过1年

D.部分患者可以表现为品行障碍

E.症状以情绪障碍为主

题型:单项选择题 A1/A2型题

由于KTC、SQ31X系列切丝机刀门系统中()的固定孔是长孔,所以可以前后移动一个微距,进行调整。

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