在某种家用电器上设计安装了调节温度的旋钮式多档开关,其结构如图甲所示.电阻丝阻值

题型:计算题

问题:

在某种家用电器上设计安装了调节温度的旋钮式多档开关,其结构如图甲所示.电阻丝阻值R1=R2=242Ω,旋转多档开关的旋钮可以改变a、b、c、d四个接线柱之间的连接情况,从而使家用电器达到所需温度.

(1)请在图乙中画出电路总电阻最大时与最小时的接线柱连接方式.

(2)计算电路中的总电阻最大阻值和最小阻值各是多少?计算该家用电器正常使用时的最小功率和最大功率.

考点:电路的连接电功率的计算
题型:计算题

试述行政组织横向分工的基本类型及其优缺点。

题型:计算题

《物权法》规定,留置权人与债务人应当约定留置财产后的债务履行期间;没有约定或者约定不明确的,留置权人应当给债务人( )以上履行债务的期间,但鲜活易腐等不易保管的动产除外。

A.1个月

B.2个月

C.3个月

D.4个月

题型:计算题

材料一:载人航天,是当今衡量一个国家综合实力的重要标志。.从“神一”到“神六”,每一次发射都进一步优化,每一次飞行都有所完善改进,每一次空间试验都有新的收获。越是伟大的工程,前进路上的艰难险阻就越多。在成功发射“神舟5号”载人飞船之后,我国圆满完成“神舟6号”载人航天飞行任务。神六“多人多天”飞行成功,无疑为下一步的航天员出舱活动.航天器交会对接以及建立空间站打下坚实的基础。预计在2007年左右实现航天员出舱和在太空行走。2009年至2012年,我们要完成发射目标飞行器,在空间轨道上实施飞行器的空间轨道交会对接技术,便可以形成真正的空间站;再向前发展,中国人将探测月球,甚至火星等更遥远的星体。

材料二:一位航天人说:“我在中学读书时就立志投身航天事业,至今无怨无悔!”还有航天人说:“我们团队中有许多默默无闻的幕后英雄,他们科学求实.勇于登攀.团结协作.淡泊名利.默默奉献。”

(1)上述材料是如何体现唯物辩证法发展观的?(12分)

(2)请运用人生观知识,分析航天人的话对我们有哪些启示?(6分)

题型:计算题

It was a hot summer day. My dad and I were getting ready to go out for a ride on the boat with my friend Katie and the dog when the phone call came, the call that made that bright, beautiful day a cold, dark, gloomy one.

I had just put on my suit, shorts, and tank top, and packed my bag with sunscreen and everything else I would need for the day. I ran into my parents' room to find Dad. When I saw him on the phone, he was crying. I'd never seen my dad cry before. My heart sank. What possibly could have happened?

"Max, I'm so sorry," I heard him say. That's when it hit me. I knew that Suzie had died.Max has been my dad's best friend for years. Suzie, his daughter, had a rare disease that mainly affected her body. Her brain was OK. She knew what was going on; she knew that shehad problems and was different from other kids. Once she told her dad that she wished she could die and be born in a different body. Yet although she couldn't live a normal life ,she was still happy.

When Suzie and I were little, we spent quite a bit of time together. As we grew up, we grew apart. She lived in New York, and I lived in the Midwest. When Suzie was ten she had to live ina hospital in Virginia. About eight months before she died, Max gave us her number at the hospital and we talked at least twice a week until the end. Suzie was always so excited to talk to us and wanted to know every detail about my life. She wanted to know everything I did and every thing I ate. In a way, she lived through me.

After we found out about her death, we made our plans to go to New York for the funeral. When she was alive, I sent her a Beanie Baby and she sent one back to me. I had bought her another one but never had the chance to send it to her, so I took it to put in her casket(棺材).

Her funeral was very different from any funeral I'd ever been to. After they lowered her casket, each one of us put a shovelful of dirt over her. I remember crying so hard, I felt weak. My cheeks burned from the tears. My whole body was shaking as I picked up the shovel, but I'm glad I did it.

When Suzie and I first started calling one another, I thought it would be more of a burden on me, but I was completely wrong. I learned so much from her. She gave me more than I could ever give to her. I will never forget her or the talks we had. I now know that I must never take anything for granted especially my health and the gift of life.

小题1:The author's family cancelled their ride because______.

A.Katie couldn't join them for the ride

B.the weather was too terrible for a ride

C.they couldn't find their dog

D.Max's daughter passed away小题2:What does the underlined part In a wav, she lived through me.” mean?

A.Suzie got to know what life outside hospital was like by sharing my experience.

B.Suzie was financially dependent of me.

C.Suzie managed to pull through her illness with the help of my family.

D.Suzie was too weak to live her own life.小题3:Which of the following is TRUE according to the text?

A.Suzie was the only person helping the author with difficulties.

B.The author feared that she might also get the same disease as Suzie.

C.The author benefited a lot from talking on the phone with Suzie.

D.The author didn't understand Suzie was her true friend until Suzie's death.小题4:What is the most important lesson the author learned from Suzie's death?

A.Never let go of a friend even if you are apart.

B.Be thankful for what we have in our life.

C.Talking with a friend can cure your illness.

D.We can learn more from our friends than they do from us.

题型:计算题

有微波谐振疗法之称的是()。

A、短波

B、厘米波

C、毫米波

D、分米波

E、超短波

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