X、Y、Z三种金属,X、Y组成原电池,X是负极;把Y放在Z的硝酸银溶液中,Y表面

题型:选择题

问题:

X、Y、Z三种金属,X、Y组成原电池,X是负极;把Y放在Z的硝酸银溶液中,Y表面有Z析出。其活泼顺序是

A.X>Y>Z

B.Z>Y>X

C.X>Z>Y

D.Y>X>Z

考点:原电池原理的应用原电池的形成条件原电池原理
题型:选择题

教师应多用正强化塑造学生良性行为,用——消除消极行为,慎用惩罚。

题型:选择题

阅读理解。

     At this moment in different places of the world people are doing different things

     In Beijing it's early morning. People are sleeping.

     In London people are leaving work to go home. They are waiting for buses or trains. Some people

are driving their cars. Some are having afternoon tea at home or walking to the pubs (酒吧) to have a

drink.

     In Moscow it's evening and people are having supper at home or in restaurants. Some are going to

watch a ballet (芭蕾舞). Some are drinking in the pubs.

     In Los Angeles (洛杉矾) it's morning. People are working in their offices. Children are starting their

lessons.

     New York is noon now. People aren't working but having lunch. They are eating hamburgers or hot

dogs and drinking coffee or Coke. Some people are seeing friends or shopping.

1. According to the passage we can see that at night some people in Moscow like to _____.

A. go to watch a ballet  

B. do shopping  

C. wait for buses  

D. go to the library

2. When children in Los Angeles are starting their lesson, people in Beijing are _____.

A. playing basketball      

B. seeing films    

C. having lessons    

D. sleeping

3. From the passage, we can see the time in New York now is _____.

A.  6:00          

B. 9:00          

C. 10:00          

D. 12:00

4. We know that London is 3 hours _____.

A. earlier than Moscow            

B. later than Moscow

C. earlier than Los Angeles          

D. later than Los Angeles

5. This passage mainly talks about _____.

A. science      

B. holiday      

C. time difference (区别)    

D. life in western countries

题型:选择题

输血后感染HIV,这是经

A.医源性传播
B.垂直传播
C.食物传播
D.接触传播
E.飞沫传播

题型:选择题

使用嵌入审计模块的目的是()

A.能够对交易处理进行持续的监控。

B.辨认出插入的非法程序代码。

C.证实主文件账户余额的正确性。

D.检查计算机存储器中特定的部分的内容。

题型:选择题

中德合资医院项目资金平衡能力分析中,资金流入项目包括()

A.经营收入、分配利润

B.长期借款、设备融资租赁

C.项目资本金、流动资金

D.营业税金及附加

E.回收固定资产余值

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