氢氧化钠是一种()化学脱脂液中的主要成分A、碱性盐类 B、强碱 C、强酸

题型:单项选择题

问题:

氢氧化钠是一种()化学脱脂液中的主要成分

A、碱性盐类

B、强碱

C、强酸

考点:油漆工考试电泳漆工电泳漆工题库
题型:单项选择题

最适宜的治疗时机是

A.立即手术

B.1月后手术

C.3月后手术

D.1年后手术

E.不手术,自行吸收

题型:单项选择题

1912年的诺贝尔化学奖授予法国化学家V.Grignard,用于表彰他所发明的Grignard试剂(卤代烃基镁)广泛运用于有机合成中的巨大贡献。Grignard试剂的合成方法是:

生成的卤代烃基镁与具有羰基结构的化合物(醛、酮等)发生反应,再水解就能合成各种指定结构的醇:

现以2-丁烯和必要的无机物为原料合成E,进而合成一种分子式为C10H16O14的具有六元环的物质J,合成线路如下,H的一氯代物只有3种。

请按要求填空:

(1)F的结构简式是                           

(2)C+D→E的反应类型是            ,F→G的反应类型是           

(3)写出F转化为G时,可能得到的另一种和G具有相同官能团的有机物的结构简式:    ;G物质在氢原子的核磁共振谱中有        种峰。

(4)写出下列化学反应方程式(有机物请用结构简式表示):

A→B:                            

I→J:                            

(5)I和该二元酸除了能反应生成J外,还可以在一定条件下发生缩聚反应生成高聚物,试写出此高聚物的结构简式                         

题型:单项选择题

阅读理解

     More than 50 years ago the idea of disabled people doing sport was never heard of. But when the

yearly Games for the disabled were started at Stoke Mandeville, England in 1948 by Sir Ludwig

Guttmann, the situation began to change.

     Sir Ludwig Guttmann, who had been driven to England in 1939 from Nazi Germany, had been asked

by the British government to set up an injuries centre at Stoke Mandeville Hospital near London. His ideas about treating injuries included sport for the disabled. 

     In the first Cames just two teams of injured soldiers took part. The next year, 1949, five teams took

part. From those beginnings, things have developed fast. Teams now come from abroad to Stoke

Mandeville every year. In 1960 the first Olympics for the disabled were held in Rome, in the same place as the normal Olympic Games. Now, every four years the Olympic Games for the disabled are held, if

possible, in the same place as the normal Olympic Games, although they are organized separately. In other years Games for the disabled are still held at Stoke Mandeville. In the 1984 wheelchair Olympic Cames,

1 064 wheelchair athletes (运动员) from about 40 countries took part. Unfortunately, they were held at

Stoke Mandeville and not in Los Angeles, along with the other Olympics.

    The Cames have been a great success in helping the progress of international friendship and

understanding, and in proving that being disabled does not mean you can't enjoy sport. One small source (来源 )  of disappointment for those who organize and take part in the Games, however, has been the

unwillingness of the International Olympic Committee (委员会)  to include disabled events at the Olympic Games for the able-bodied. Perhaps a few more years are still needed to persuade those fortunate enough not to be disabled that their disabled fellow athletes should be included.

1. The first Cames for the disabled were held      after Sir Ludwig Guttmann arrived in England.       

A.40 years                      

B. 21 years

C. 10 years                      

D. 9 years

2. Besides Stoke Mandeville, surely the Games for the disabled were once held in        .   

A. New York    

B. London    

C. Rome    

D. Los Angeles

3.  This text tells us that Sir Ludwig Guttmann          .     

A. is an early organizer of the Games for the ablebodied

B. is welcomed by the British government

C. is an injured soldier

D. is from England

4. From the passage, we may know that the writer is             .    

A. one of the organizers of the Cames for the disabled

B. a disabled person who once took part in the Games

C. against holding the Games for the disabled    .

D. in favour of holding the Cames for the disabled

题型:单项选择题

公元前18世纪___________(国王名)统一了两河流域,他在位时制定了__________是现存世界古代第一部比较完备的成文法典。

题型:单项选择题

有举行“坨船”竞逐比赛这一活动习俗的国家是()

A.印度

B.菲律宾

C.巴西

D.澳大利亚

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