某纯净物A隔绝空气加热分解为CuO、H2O和CO2,根据这一实验事实得出的下列结

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问题:

某纯净物A隔绝空气加热分解为CuO、H2O和CO2,根据这一实验事实得出的下列结论中不正确的是   [ ]

A.A由四种元素组成          

B.A是化合物  

C.A中含有水             

D.A受热不稳定

考点:质量守恒定律
题型:不定项选择题

What picture do you have of the future? Will life in the future be better, worse or the same as now? What do you hope for about the future? Scientists think that life will probably be very different in 2050.

First of all, it seems that people won't use TV channels(频道) by 2050. Instead, people will choose a program from a “menu" and a computer will send the program directly to the television.

Water will become a very serious problem. We'll need much more water, but there won't be enough. Some scientists think that water would be the cause of war(战争).

Cars will run on new, clean energy and they will go very fast. And there won't be any accidents with the help of computers. On the other hand, space planes will take people around the world in two hours.

Robots will work in factories instead of people. Many factories have already used robots. Big companies prefer robots--they do not ask for money, and they work for 24 hours a day...

In a word, by 2050, our life will change a lot and our future will be quite different from now.

根据短文内容,判断以下句子的正误。你认为正确的句子,请在答题卷相应空格内写

“T”,错误的写“F”。(共5小题,每小题l分,满分5分)

小题1:Maybe people won't use TV channels any more by 2050.

小题2:There will be a lot of car accidents by 2050.

小题3:Water could be the cause of war.

小题4:Robots will work in big companies and ask for money.

小题5:According to the passage, our life in the future will be better.

题型:不定项选择题

I knew that  _____ would ever discourage him; he would never give up wanting to be a director.

A.something

B.anything

C.everything

D.nothing

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为实现解决渠道冲突的目标而进行的讨论沟通被称为()

A.销售促进

B.协商谈判

C.战略联盟

D.销售代理

题型:不定项选择题

在CSM网络管理界面,在下拉View菜单中单击Topology,就可以看到( )

A.该交换机与其他主机连接的拓扑图
B.该交换机与其他网络连接的拓扑图
C.该交换机与其他路由器连接的拓扑图
D.该交换机与其他交换机连接的拓扑图

题型:不定项选择题

粗加工脆性材料,铣刀应取较大的后角。

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