有机磷酸酯农药抑制的酶是A.胆碱酯酶 B.己糖激酶 C.琥珀酸脱氢酶 D.柠檬酸合成

题型:单项选择题

问题:

有机磷酸酯农药抑制的酶是

A.胆碱酯酶

B.己糖激酶

C.琥珀酸脱氢酶

D.柠檬酸合成酶

E.异柠檬酸脱氢酶

考点:临床执业医师临床执业医师92
题型:单项选择题

孙中山一生坚持民主革命,与时俱进,不断探索和完善其民主思想。下列属于孙中山在民国时期提出的主张的有     

①反对民族压迫,反对满洲贵族的专制统治,恢复汉族的正统地位   

②反对帝国主义,谋求中 * * 与世界其他民族的独立与平等   

③平均地权,节制资本,实行“耕者有其田”,改善农民和工人的生活状况   

④上书李鸿章提出革新政治的主张     [ ]

A.①②④           

B.②③       

C.②④          

D. ①③④

题型:单项选择题

一堆沙子有a吨,每天运走6吨,3天后还剩下(    )吨。

题型:单项选择题

以下不属于下岗失业的“正面效应”的是?()

A.宏观经济

B.微观经济

C.管理水平

D.社会效率

题型:单项选择题

To us it seems so natural to put up an umbrella to keep the water off when it rains, but actually the umbrella was not invented as protection against the rain, Its first use was as a shade against the sun!

Nobody knows who first invented it, but the umbrella was used in very ancient times. Probably the first to use it were the Chinese in the 11th century BC.

We know that the umbrella was used in ancient Egypt and Babylon as a sunshade. And there was a strange thing connected with its use: it became a symbol of honor. In the Far East in ancient times, the umbrella was allowed to be used only by those in high office.

In Europe, the Greeks were the first to use the umbrella as a sunshade. And the umbrella was in commonly used in ancient Greece. But it is believed that the first persons in Europe to use the umbrella as protection against the rain were the ancient Romans.

During the Middle Ages, the use of the umbrella practically disappeared. Then it appeared again in Italy in the late sixteenth century. And again it was considered as a symbol of power. By 1680, the umbrella appeared in France and later in England.

By the eighteenth century, the umbrella was used against rain throughout most of Europe.

Umbrellas have not changed much in style during all this time, though they have become much lighter in weight. It wasn’t until the twentieth century that women’s umbrellas began to be made , in a whole variety of colors.

小题1:According to this passage, the umbrella was probably first invented in ancient_______.

A.China

B.Egypt

C.Greece

D.Rome小题2:Which of the following statements is not true about the umbrella?

A.No one exactly knows who the inventor of the umbrella was

B.The umbrella was first invented to be used as protection against the sun.

C.The umbrella changed much in style in the eighteenth century

D.In Europe, the Greeks were the first to use the umbrella as a sunshade.小题3:A strange feature of the umbrella’s use is that it was used as__________.

A.protection against rain

B.a symbol of honor and power

C.a shade against the sun

D.women’s decoration小题4:In Europe, the umbrella was first used against the rain_______________.

A.during the Middle Ages

B.in Rome

C.by the 18th

D.in Greece小题5:This passage talks mainly about_______________.

A.when and how the umbrella was invented

B.why the umbrella was so popular in Europe

C.the development of the umbrella

D.The history and use of the umbrella

题型:单项选择题

告警模块面板上↑按钮起什么作用()

A.数值增加

B.退出到上级菜单

C.菜单循环

D.数值减少

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