问题 问答题 简答题

简述加热乙酸法测定尿中蛋白质的原理。

答案

参考答案:

加热煮沸使蛋白质变性凝固,加稀酸使尿pH值降低并接近蛋白质等电点(pH4.7左右)时,使变性凝固的蛋白质在含有适量无机盐情况下进一步沉淀。

写句子

按要求写句子。     

1.照样子,把下列句子中加横线的词写具体。     

     例:教室里非常安静。 

            教室里非常安静,掉一根针的声音都能听到。

     (1)小城的街道很

                                                                                                                                  

     (2)今天的天气十分晴朗。    

                                                                                                                                  

     (3)海面平静。    

                                                                                                                                  

2.   王熙凤携着黛玉的手。

        王熙凤上下细细的打量了她一回。

      (把两句话合并成一句话)  

                                                                                                                                                 

3.你对一个陌生人不能单凭他的穿着来判断他的身份。(把句子换成一种强烈感情的表达形式)

                                                                                                                                                        

4.小嘎子要扳倒小胖墩儿,是那么容易的事?(改成陈述句)  

                                                                                                                                                        

5.诸葛亮说:“怎么敢跟都督开玩笑?我愿意立下军令状,三天造不好,甘受惩罚。”(改为第三人称

      转述)

                                                                                                                                                        

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