可编程控制器根据其不同的用途可分为什么？

“好大一棵树，绿色的祝福”这句话包含一些生物学知识，请你结合如图，利用相关的知识回答下列问题：

（1）写出大树进行的A　     　、B　     　、C　      　三种生理活动的名称．

（2）大树根系的吸水主要由　成熟　区来完成，叶片散失水分的通道是　     　．

（3）喜欢晨练的人清晨起来喜欢到树林边散步，这里空气清新，这主要是由于大树的　    　（填写字母）活动的结果．

（4）1公顷树木，每天吸收约150﹣500千克的二氧化碳，并释放出60﹣400千克的氧气．这是大树的　   　（填写字母）活动的结果．因此说绿色植物的这种作用有利于维持生物圈的　     　平衡．

某地1990年6月30日有男性人口13697600人，男性人口中因心血管疾病死亡18311人，其中因冠心病死亡654人，计算该地男性人口冠心病死亡强度

A．654/13697600×100000/10万=4.77/10万
B．654/18311×100%=3.57%
C．18311/13697600×1000‰=1.34‰
D．654/13697600×100%=0.00477%
E．资料不全，无法计算

It is a matter of common observation that although incomes keep going up over the years，people never seem to become much better off! Prices are rising continuously．The condition is termed(称作) one kind 0f inflation, the money supply is becoming inflated so that each unit of it becomes less valuable．People have got used in recent years to higher and higher rates of inflation．

What could be bought ten years ago for one dollar now costs well over two dollars. It seems that this rate of inflation is tending to rise rather than to fall．If in the real world our money incomes go up at the same rate as prices，one might think that inflation does not matter．But it does when money is losing value，it lacks one of the qualities of a good money---stability (稳定) of value．It is no longer acceptable as a store of value；and it becomes an unsuitable standard of deferred(延期) payments．Nobody wants to hold a wasting possession，so people try to get rid of money as quickly as possible. Inflation therefore stimulates people spending，and prevents people from saving.

小题1:

What does inflation mean?

A．People’s money becomes more valuable

B．The problem of employment will be solved．

C．It’s easier for people to find better paying jobs．

D．Money keeps losing its value．小题2:

From the passage．we can know inflation __________.       

A．seldom happens

B．is very common at present

C．is a must

D．has become less in recent years小题3:

According to the passage，if incomes and prices rise together ______     

A．the business will become better

B．money will hold its value

C．inflation won’t be a problem

D．inflation will remain to be a problem小题4:

In a period of inflation，people are likely to  ______ ．

A．put much money on the stock market(股市)

B．stop spending money

C．hold on to money as a dependable possession

D．spend money as soon as possible

根据《广西壮族自治区旅游条例》的规定，以（）以及其他形式召集旅游者的单位和个人，未取得旅行社业务经营许可的，不得经营旅行社业务。

A.车友会

B.协会

C.公司

D.俱乐部

自由基的损伤作用不包括（）

A.激活ATP酶，加速ATP消耗

B.破坏核酸及染色体

C.破坏膜的正常结构

D.抑制蛋白质功能

E.减少ATP生成