下列各项中不属于代谢活化生成的活性代谢产物的是() A.亲电子物质 B.自由基 C.

题型:单项选择题 A1型题

问题:

下列各项中不属于代谢活化生成的活性代谢产物的是()

A.亲电子物质

B.自由基

C.亲核物质

D.原癌基因

E.氧化还原物质

考点:公卫执业医师卫生毒理学卫生毒理学题库
题型:单项选择题 A1型题

根据短文内容和首字母提示,补全文中单词.。

     All a __1__ the world, people drink tea. But tea doesn't mean the same thing to everyone. In different

 countries people have very d__2__ ideas about drinking tea.

     In China, for example, tea is always served w__3__ people get together. The Chinese drink it at any

  time of the day at h __4__ or in tea houses. They prefer their tea plain, with nothing e__5__ in it.

     Tea is a __6__ important in Japan. The Japanese have a special way of serving tea c __7__  a  tea

 ceremony (茶道). It is very old and full of meanings. Everything must be done in a special way in the

 ceremony. There is even a special room for it in J__8__ homes.

     A __9__ tea-drinking country is England. In England, the late afternoon is "teatime".  Almost everyone

  has a cup of tea then. The English usually make tea in a teapot and drink it w __10__ cream and sugar. They also eat cakes, cookies and little sandwiches at teatime.

题型:单项选择题 A1型题

气体绝缘金属封闭开关设备外壳的主要作用不包括()。

A.机械支撑

B.安全保护

C.散热

D.防噪声

题型:单项选择题 A1型题

铅中毒患者血中ZnPP增高的原因是()

A.铅抑制δ-ALA脱水酶

B.铅使δ-AIA脱水酶活性升高

C.铅抑制δ-ALA合成酶

D.铅使δ-ALA合成酶活性增高

E.铅抑制血红素合成酶

题型:单项选择题 A1型题

从所给的四个选项中,选择最合适的一个填入问号处().

A.A

B.B

C.C

D.D

题型:单项选择题 A1型题

某一纸绢质文物的陈列室,面积162m2(9×18)高度4m,需设计全淹没二氧化碳灭火系统。回答下列问题:

二氧化碳的储存量应符合下列()要求。

A.设计用量

B.设计用理、蒸发量、剩余量之和

C.设计用量与泄露量之和

D.设计用量×1.7

更多题库