下列反应中,SO2作还原剂的是( ) A.SO2+NaOH=NaHSO3 B.2

题型:选择题

问题:

下列反应中,SO2作还原剂的是(  )

A.SO2+NaOH=NaHSO3

B.2Mg+3SO2=S+2MgSO3

C.SO2+2H2S=3S+2H2O

D.2KMnO4+5SO2+2H2O=2MnSO4+K2SO4+2H2SO4

考点:氧化还原反应的本质和特征氧化还原反应的定义
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阅读短文,根据短文内容完成句子,每空填一词。

DearMissLi,

     I'd like to thank you for sending money to "Animal Helpers", an organization set up to help disabled people.

For sure you have helped make it possible for me to have "Lucky", who has filed my life with pleasure.

     "Lucky" is a specialy trained dog for the disabled. It is a good name for him because If eel very lucky to

havehim. Being blind, deaf, unable to use my hands easily are the chalenges I face. "Lucky" helps me open

and shut the doors, carry things and even answer the telephone. He cheers me up a lot.

     I'll send you a photo of him if you like, and Icould show you how he helps me too one day. And I thank

you again for supporting "Animal Helpers". It is important that this organization does not run out of money.

Your donation is greatly appreciated and the money is well used to help disabled people like me. 

     Bestwishes, 

                                                                                                                                            Liz Smith

1. Liz Smith is a __________ man who is __________ to see or hear.

2. "Lucky" is the __________ of a specialy __________ dog.

3. "Animal Helpers" is an organization that was __________ up to __________ the disabled.

4. Liz Smith will __________ Miss Lia photo of the dog and __________ her how "Lucky" helps him.

5. Liz Smith wrote this letter to __________ Miss Lif or her __________ to Animal Helpers.

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下列房地产权利的种类中,属于他物权的有( )。

A.所有权

B.土地使用权

C.地役权

D.典权

E.租赁权

题型:选择题

设备性能验收阶段,出现( )的情况时,监理工程师不应签发设备初步验收证书。

A.存在个别微小缺陷但不影响设备安全运行,供货方同意在限定时间内免费修理
B.第一次性能验收试验表明几项性能指标未达到保证值,但属于采购方的使用原因
C.第二次性能验收试验未达到保证值的几项缺陷,供货方采取相应措施后达到保证值
D.由于采购方生产运行的需要,在合同约定的期限内未能进行设备性能验收试验

题型:选择题

以下哪些药疹型称重症药疹:()

A.猩红热或麻疹样型

B.重症多形红斑型

C.固定性药疹型

D.剥脱性皮炎型

E.大疱性表皮松解坏死型

题型:选择题

如果再循环风扇工作,前溢流活门的位置将是().

A.打开的;

B.关闭的;

C.只受控于后溢流活门;

D.只受控于自动流量控制活.

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