根据氧化还原反应CuSO4+Fe═FeSO4+Cu,设计一个原电池: (1)用_

题型:填空题

问题:

根据氧化还原反应CuSO4+Fe═FeSO4+Cu,设计一个原电池:

(1)用______作负极,电极反应为______.(2)电解质溶液是______.(3)用______作正极,电极反应为______.

考点:原电池的形成条件
题型:填空题

通过血液接触感染AIDS的概率为:()

A.0.1%~0.2%

B.0.2%~0.3%

C.0.2%~0.5%

D.0.5%~0.8

题型:填空题

儿童和青年偶发口腔无痛性浅表脱屑的是()
适宜口腔溃疡反复发作患者的是()
长期应用可引起念珠菌感染的是()
频繁应用可使局部组织萎缩的是()

A.左旋咪唑

B.西地碘含片

C.甲硝唑粘贴片

D.氯己定含漱剂

E.地塞米松粘贴片

题型:填空题

用所给词的正确形式填空。

1. What's the __________ (mean) of the word?

2. There are lots of ___________ (man) over there. Oh, they are all __________ (man)

    teachers in our school.

3. This is the ___________ (begin) of the Garden tour.

4. He often ___________ (swim) in the ___________ (swim) pool.

   Yesterday he ___________ (swim) here with some of his friends.

   They __________ (be) very ___________ (exciting).

5. You can call Helen for some more ____________ (information).

6. Don't swim there alone. It's ___________ (safe).

7. It's very ___________ (crowd), because there are so many ____________ (passenger).

8. There are some ___________ (woman) ____________ (play) beach volleyball.

9. He didn't go climbing with his classmates, because of his ___________ (ill).

10. (1) —Would you like ___________ (other) one? —No, thanks.

     (2) Many people are on the beach. Some are swimming in the sea.

          Some are playing beach volleyball. ____________ (other) are ___________ (lie)

          on the beach, enjoying the sunshine.

     (3) Sandy is taller than the ___________ (other) girls in her class.

     (4) I have two pens. One is old, ____________ (other) is new.

     (5) She is better at English than _____________ (other) student in the class.

     (6) We must help each ____________ (other).

题型:填空题

电磁环网是指不同电压等级运行的线路,通过()回路的联接而构成的环路。

题型:填空题

[听力原文] 根据这段话,可以知道什么?()

A.邻居太笨了 

B.羊都找到了 

C.大家都迷路了 

D.方向很重要

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