简述黄芩抗炎抗过敏作用的特点及作用机.

稿件的修改可分为：（）和（）两种。

关于反射弧的叙述错误的是

A．是反射活动的结构基础

B．包括五个组成部分

C．反射中枢均在大脑皮层

D．反射弧任何一个环节中断，反射将不能进行

E．在整体情况下发生反射活动时，中枢进行整合活动

Do you think there is too much noise in our city If you live near an airport, you will be unhappy because a plane often makes a loud noise. The sound of planes or heavy vehicles is likely to cause deafness if heard continuously.
However, most people in our city do not seem to mind noise. They like to enjoy music when they are doing uninteresting jobs. It is a new danger because pop music, when played through powerful amplifiers, can reach 120 decibels at a distance of five feet. A continuous noise of over 85 decibels can cause deafness. It was discovered that many young people in America could hear no better than 65-year-old people.
In the past we used to think that only workers in very noisy places would become deaf. For example, when newspapers and books are being printed, the noise level is over 85 decibels, and some of the workers become deaf. Today, however, scientists believe that 10 percent of the workers in Britain are being deafened by the noise.
Sometimes noise of less than 85 decibels can make some people tired and stressed. We all know that too much noise makes life difficult and unpleasant. It can do great harm to people’s health and prevent people from working well. Workers in noisy offices are not as efficient as those in quiet offices. Noise makes people less efficient. Can anything be done to reduce or control noise
In Britain the government has made several laws to reduce noise. Though the government has spent a lot of money in making airports and main roads quieter, many people think that there are still not enough laws. For example, there are no laws to control the noise of machines. In Japan, America and Norway there are such laws. As a result, workers can be given compensation if they become deaf.

Noise below the level of 85 decibels ______.

A．can affect some people’s moods

B．cannot do any harm

C．can cause sudden deafness

D．can make office workers efficient

“沃家庭”统一帐户下设置（）账户和多个（）账户。（）账户给所有用户缴费，（）账户仅用于特定用户或费用项缴费。

汽油机供给系统的组成和功用是什么？