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【单选题】
The Significance of the Division of Labour The significance of the division of labour was first found by Adam Smith in the 1770s. He explained part of its advantages. He gives as an example the process (19) which pins were made in England. 'One man draws (20) the wire another strengthens it a third cuts it a fourth points it a fifth grinds it at the top to prepare it to receive the head. To make the head (21) two or three operations. To put it on is a (22) operation, to polish the pins is another. And the important business of making pins is, (23) this manner, (24) into about eighteen operations, which in some factories are all performed by different people, (25) in others the same man will sometimes perform. two or three of them. ' Ten men, Smith said, in this way, turned (26) twelve pounds of pins a day or about 4,800 pins per worker. But if all of them had worked separately and (27) without division of labour, none of them could have made twenty pins in a day and perhaps not even one. There can be no doubt that division of labour is a/an (28) way of (29) work. Fewer people can make more pins. Adam Smith saw this but he also took it for granted that division of labour is in itself responsible for economic (30) and development and that it (31) for the difference between (32) economies and those that (33) still but division of labour adds nothing new it only enables people to produce more of what they already have. (19)
A.
in
B.
on
C.
by
D.
through
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【简答题】在 [PtCl (NH 3 ) 2 ] Cl 配合物中, 中心离子、配离子 电荷 、 配位数 、配体数分别 是 。
【单选题】政府采购程序中,货物和服务项目实行招标方式采购的,自招标文件开始发出之日起至投标人提交投标文件截止之日止,不得少于( )日。
A.
15
B.
20
C.
30
D.
25
【单选题】在配合物 [PtCl 2 ( NH 3 ) 2 ] 中,配位原子是( )
A.
Cl
B.
NH 3
C.
Cl 和 N
D.
Cl 和 NH 3
E.
Cl 和 H
【单选题】下列对细胞基本共性的描述错误的是:
A.
细胞具有细胞核与线粒体
B.
一分为二的细胞分裂方式
C.
细胞具有增殖的能力
D.
有相同的遗传装置
【单选题】在配位分子 [PtCl 2 (NH 3 ) 2 ] 中,配位数为
A.
3
B.
4
C.
5
D.
6
【简答题】政府采购程序中,货物和服务项目实行招标方式采购的,自招标文件开始发出之日起至投标人提交投标文件截止之日止,不得少于( )日。
【判断题】[PtCl 2 (NH 3 ) 2 ] 可能存在顺反异构体。
A.
正确
B.
错误
【简答题】《单片机》实验1_实验报告.doc 实验1_单片机开发基本技能和C51语言.doc
【单选题】下列对细胞基本共性的描述错误的是:
A.
细胞具有细胞核与线粒体
B.
细胞具有增殖的能力
C.
一分为二的细胞分裂方式
D.
有相同的遗传装置
【简答题】PtCl 2 (NH 3 ) 2 可以形成两种固体,一种为淡黄色,在水中的溶解度小,另一种为黄绿色,在水中的溶解度较大,请回答下列问题 (1)PtCl 2 (NH 3 ) 2 是平面正方形结构,还是四面体结构________________ (2)请在以下空格内画出这两种固体分子的几何构型图 淡黄色固体:_________,黄绿色固体:_________ (3)NH 3 分子中的N原子有一对孤对电...
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