问题 问答题 简答题

生地黄与熟地黄的来源、性能、功效应用有何异同?

答案

参考答案:

生地黄、熟地黄同出一物,均来源于玄参科植物地黄的根,新鲜、干燥根为生地黄,炮制后为熟地黄。生地黄、熟地黄均能补阴,用于阴虚证。生地黄苦甘寒,长于清热凉血、养阴生津,用于热入营血、血热出血、热病伤津、阴虚发热、津枯肠燥便秘等。熟地黄甘微温,长于补血滋阴、益精填髓,用于血虚精亏的头昏眼花、眩晕耳鸣、须发早白、腰膝酸软、月经不调、崩漏不止、阴虚的骨蒸潮热、盗汗、遗精、消渴等。

填空题

为验证卤素单质氧化性的相对强弱,某小组用右图所示装置进行试验(夹持仪器已略去,气密性已检验)。试验过程:

I.打开弹簧夹,打开活塞a,滴加浓盐酸。

II.当B和C中的溶液都变为黄色时,夹紧弹簧夹。

III.当B中溶液由黄色变为棕色时,关闭活塞a。

IV.……

试回答下列问题:

(1)A中产生                                                                                                        色气体,其结构式是                 

(2)能使湿润的淀粉—KI试纸变蓝的气体是                                                                 

(a) Cl2 (b) N2O4 (c) I2蒸气 (d) SO2 (e) O3 (f) CO2

(3)滴加浓盐酸前,分液漏斗首先要                                                                                                                      

(4)过程III实验目的是                                                                                                                                                                                                                                                            

(5)A中产生氯气的离子方程式为                                                                                                                                                                                                                                                       

(6)B中浸有NaOH溶液的棉花作用是                                                                                              ,写出反应的离子方程式                                                                                                                                                                                                                                                                        

单项选择题