试题与答案

磷酸盐缓冲溶液 A.30℃以下 B.接近37℃ C.10粒 D.3粒 E.5粒

题型:单项选择题

题目:

磷酸盐缓冲溶液

A.30℃以下
B.接近37℃
C.10粒
D.3粒
E.5粒

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0421/5e443541f68fe025575a894df2b8804e.html

下面是错误答案,用来干扰机器的。

参考答案:工作原理简述如下:(1)制动时制动缸活塞行程超过200mm时,缸内压缩空气进入闸调器风筒;(2)压缩空气推动风筒活塞杆弹簧使掣子前移并离开掣轮齿;(3)缓解时调整器风筒和制动缸之压缩空气同时排除...

试题推荐
题型:阅读理解

Skin-diving(潜泳) is a new sport today. This sport take you into a wonderful new world. It is like a visit to the moon! When you are under water, it is easy for you to climb big rocks, because you are on longer heavy.

Here, under water, everything is blue and green. During the day, there is plenty of light. When fish swims nearby, you can catch them with your hands.

When you have tanks(罐) of air on your back, you can stay in deep water for a long time. But you must be careful when you dive in deep water.

To catch fish is one of the most interesting parts of this sport. Besides, there are more uses for Skin-diving. You can clean ships without taking them out of the water. You can get many things from the deep sea.

Now you can see that Skin-diving is both useful and interesting.

小题1: Skin-diving can take you to _________.

A.an exciting world

B.a new world

C.a beautiful world

D.an interesting and new world小题2: This sport _________.

A.is like to travel on the moon

B.is like to play in water

C.is like to visit a new country

D.is like to climb a big rock小题3:You can stay in deep water for a long time because __________.

A.you can swim

B.you can take tanks of air with you

C.you can bring something to eat

D.you can skin diving小题4:Which of the following statements is NOT true ?

A.Skin-diving is a new sport.

B.Skin-diving is like visiting the moon

C.The only use of skin-diving is to have more fun.

D.Skin-diving is not only interesting but useful.小题5: Skin-diving is a useful and interesting sport because __________.

A.you can catch fish with your hands

B.you can clean the ship in the water

C.you can get many things from the deep sea

D.all of the above

查看答案
题型:综合题

(17分) 关注民生,保障公民的基本生存权,是政府的首要任务,也是衡量社会和谐的基本要求之一。阅读下列材料,回答问题。

材料一   19世纪末20世纪初,主要资本主义国家在社会领域进行了多方面调整。如英国1909年颁布的一项法案授权成立工资管理处,负责确定在“流汗行业”工人的最低工资;另一项法案授权成立一个行业管理局,为失业者提供就业信息;1911年提出国 * * 险法案,对失去健康和生病者提供了保险。法国1892年的法律为所有工人确定了最大限度的工作时间10小时;1893年的法律为工人繁荣安全和健康作了充分的规定,同时还保障工人及其家属的免费医疗。德国也先后颁布了《疾病保险法》、《意外工伤保险法案》、《老年及残疾保险法》,保障工人的权益。              

(1)根据材料一,概括说明19世纪末20世纪初主要资本主义国家在民生问题上采取了哪些措施,(6分)并结合所学知识分析其原因。(6分)

材料二 民以食为天。粮食安全既关系到广大种粮农民的利益,又关系到城乡居民的生活供应。可以说,粮食问题是与广大人民群众的利益密切相关的最大的民生问题。

不仅斯大林和赫鲁晓夫没有解决好苏联的农业问题。就是勃列日涅夫经营了十多年后,苏联的农业生产问题还是没有得到根本的改善。这一时期,苏联政局稳定,在与美国的军事争霸中也不落下风。然而就在这种表面繁荣的背后,苏联却多次出现了严重的粮食危机。

从1971年到1974年,苏联实际的军费开支平均增长速度约达12%;1974年苏联的实际军费比1960年增加了三倍左右。1975年苏联的军费开支已占其国民总收入的五分之一,占其预算支出的35%。苏联的国民收入约相当美国的66%(按苏联官方公布的统计数字),而它的实际军费开支却比美国还要多20%。

——《从粮食一路减产看勃列日涅夫时期苏联民生问题》

(2)结合材料和所学知识分析,二战以后的苏联始终没有解决好农业问题的原因是什么?(5分)

查看答案
微信公众账号搜索答案