相关习题
 0  23358  23366  23372  23376  23382  23384  23388  23394  23396  23402  23408  23412  23414  23418  23424  23426  23432  23436  23438  23442  23444  23448  23450  23452  23453  23454  23456  23457  23458  23460  23462  23466  23468  23472  23474  23478  23484  23486  23492  23496  23498  23502  23508  23514  23516  23522  23526  23528  23534  23538  23544  23552  159627 

科目: 来源: 题型:

如图所示,闭合电键S,两灯均不亮。若电路中只有一处故障,且只发生在灯L1或L2上。现用一根导线并接在L1的两端,两灯仍不亮。正确的判断是            (    )
A.灯L1断路
B.灯L1短路
C.灯L2断路
D.灯L2短路

查看答案和解析>>

科目: 来源: 题型:

如图所示,开关S闭合时,可能发生的现象是(  )
A.L1被烧坏B.L2不发光,L1发光
C.电池被烧坏D.L2被烧坏

查看答案和解析>>

科目: 来源: 题型:

如图所示的电路,当开关S闭合时,下列说法中正确的是                 (   )
 
A.L1不亮,L2亮,电流表不会损坏
B.L1 L2都不亮,电流表不会损坏
C.L1 L2都不亮,电流表会损坏
D.L2不亮,L1亮,电流表会损坏

查看答案和解析>>

科目: 来源: 题型:

把甲、乙两段电阻线两端加上相同的电压,甲线中的电流大于乙线中的电流,忽略温度的影响,下列判断中错误的是(   )
A.当它们材料、粗细都相同时,甲线长乙线短
B.当它们材料、长度都相同时,甲线粗乙线细
C.当它们长度、粗细都相同时,两线的材料一定不同
D.甲、乙两电阻线的材料、长短、粗细不可能完全相同

查看答案和解析>>

科目: 来源: 题型:

在探究电路的电流规律实验时用了如图中的某个电路,已知R1=R2<R3,电流表的读数分别是:A1为0.3A,A2为0.15A,A3为0.45A。测量时的电路图应是(   )
 

查看答案和解析>>

科目: 来源: 题型:

如图所示,电路连接正确的是

查看答案和解析>>

科目: 来源: 题型:

—Can you come to dinner with us this evening, Zhao Ming?
— _______.
A.Sure, I'd love toB.No. That'll be too tired
C.I'll stay at homeD.It’s really kind of you

查看答案和解析>>

科目: 来源: 题型:

I am going to have a party tomorrow night. I told my mother that she needn’t do   42  for me. My friend Jane is coming, too. She would like to help me,   43  she can’t. Because she has a piano lesson in the morning and in the afternoon she has to babysit her sister. So I will do everything by myself. I try to make   44  party nice.
I sent invitation to my friends   45 . Now I am thinking about what I need to do tomorrow. Yes! I have to clean the room and do some shopping. I am going   46  some food, drinks and some fruit in the supermarket. I am going to make a shopping list   47 I go. I also have to decorate(装饰)the room. I need to do so many things, so I   48  see the movie “Da Vinci Code” after lunch. A terrible thing! The party begins   49  8 pm, so I must have my dinner   50 . I am tired after I finish   51  so many things and after dinner I can have a short rest.
【小题1】
A.something B.anythingC.nothingD.everything
【小题2】
A.soB.althoughC.butD.because
【小题3】
A.aB.anC.myD./
【小题4】
A.yesterdayB.tomorrow
C.tomorrow morningD.the day after tomorrow
【小题5】
A.buyB.sellC.to buyD.buying
【小题6】
A.after B.when C.howD.before
【小题7】
A.canB.notC.can’t D.no
【小题8】
A.atB.inC.onD.with
【小题9】
A.lateB.earlyC.short D.slow
【小题10】
A.doB.to doC.didD.doing

查看答案和解析>>

科目: 来源: 题型:

Do you know the Chinese saying “He who doesn’t reach the Great Wall is not a true man”? Mr. White knows it. Next month he is going to Beijing with his wife. They are going to visit the Great Wall. They are staying in Beijing for about a week. They have a lot of Chinese friends there, so they are visiting them. Then they’re flying to West Lake in Hangzhou. They are going boating there and staying there for about three days. Mr. White knows that the Yellow Mountain is very famous in China. So they’re going to Anhui to go hiking in the great mountain. After two days in Anhui they’ll have to go back to Sydney.
“I’m taking lots of photos in China. When I get back to Sydney, I am going to show the photos to my friends. I want my friends to know more about China.” said Mr. White.
【小题1】Who is Mr. White going to China with?
A.His friends. B.His parents. C.His wife.D.His children.
【小题2】Mr. White is staying in Beijing for about     .
A.two weeksB.three days C.one month D.seven days
【小题3】Mr. White is     in Hangzhou.
A.going boatingB.going hiking C.going campingD.going swimming
【小题4】Mr. White is from     .
A.Australia B.AmericaC.CanadaD.England
【小题5】From the passage we can learn that     .
A.Mr. White is going to China next week
B.Mr. White has many friends in Beijing
C.Mr. White is going to visit the Yellow River
D.Mr. White is staying in Anhui for a week

查看答案和解析>>

科目: 来源: 题型:





【小题1】Sunny English Club is for       .
A.nurses B.policeman C.businessmanD.students
【小题2】You will pay        if you want to stay in the English club for a year.
A.300 yuanB.600 yuanC.1200 yuanD.2400 yuan
【小题3】You can visit Ocean Museum        .
A.on Saturday B.on Monday
C.on WednesdayD.anytime
【小题4】One can get free examinations in Health Center if he is        .
A.9B.17 C.67D.73
【小题5】If you want to know the life of the fish, you should go to        .
A.Health CentreB.Ocean Museum
C.Sunny English ClubD.16 Young Le Street

查看答案和解析>>

同步练习册答案