问题 多项选择题

下列有关雄黄炮制方法的叙述,正确的是()

 

A.采用水飞法炮制

B.含砷量以二硫化二砷(AsS)计,不得少于90.0%

C.粉碎时要忌铁器

D.具有解毒杀虫、燥湿化痰的功能

E.炮制以降低或除去As2O3

答案

参考答案:A, B, C, D, E

解析:本题考查雄黄的炮制方法及注意事项。雄黄味辛,性温;有毒。归肝,大肠经。具有解毒杀虫,燥湿祛痰的功能。水飞使药粉达到极细和纯净,毒性降低,便于制剂。雄黄含砷量以二硫化砷(As2O3)计,不得少于90.0%。粉碎时要忌铁器,并要注意温度,炮制以降低或除去剧毒化合物AsO(俗称砒霜)。

单项选择题
单项选择题

Who won the World Cup 1994 football game What happened at the United Nations How did the critics like the new play (1) an event takes place, newspapers are on the streets (2) the details. Wherever anything happens in the world, reporters are on the spot to (3) the news.

Newspapers have one basic (4) , to get the news as quickly as possible from its source, from those who make it to those who want to (5) it.

Radio, telegraph, television, and (6) inventions brought competition for newspaper. So did the development of magazines and other means of communication. (7) , this competition merely spurred the newspapers on. They quickly made use of the newer and faster means of communication to improve the (8) and thus the efficiency of their own operations. Today more newspapers are (9) and read than ever before. Competition also led newspapers to branch out into many other fields. Besides keeping readers (10) of the latest news, today’s newspapers (11) and influence readers about politics and other important and serious matters. Newspapers influence readers’ economic choices (12) advertising. Most newspapers depend on advertising for very (13) .

Newspapers are sold at a price that (14) even a small fraction of the cost of production. The main (15) of income for most newspapers is commercial advertising. The (16) in selling advertising depends on a newspaper’s value to advertisers. This (17) in terms of circulation. How many people read the newspaper

Circulation depends (18) on the work of the circulation department and on the services or entertainment (19) in a newspaper’s pages. But for the most part, circulation depends on a newspaper’s value to readers as a source of information (20) the community, city, county, state, nation, and world—and even outer space.

16()

A.way

B.means

C.chance

D.success