符合外源性过敏性肺泡炎的胸部X线表现的是() A.胸部X线片示肺段或叶性分布的片状阴

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问题:

符合外源性过敏性肺泡炎的胸部X线表现的是()

A.胸部X线片示肺段或叶性分布的片状阴影,常为双外侧带分布,阴影可有一定的游走性

B.胸部X线片示弥散性点状,浸润阴影,从肺门向外围散射,肺尖常清晰

C.胸部X线片示两肺门或中、下野内带散在小结节阴影、网状纹理增加或磨玻璃影

D.胸部X线示弥散性微小、边缘不清的斑点状阴影

E.胸部X线片示在急性期呈现中、下肺野弥散性、细小、边缘模糊的结节状阴影

考点:贵州住院医师急诊科间质性肺疾病间质性肺疾病题库
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如图,质量为M=3kg的木板放在光滑水平面上,质量为m=kg的物块在木板上,它们之间有摩擦,木板足够长,两者都以v=4m/s的初速度向相反方向运动,当木板的速度为v1=2.4m/s时,物块的速度是______m/s,木板和物块最终的共同速度为______m/s.

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资料显示:“氨气可在纯氧中安静燃烧…某校化学小组学生设计如下装置(图中铁夹等夹持装置已略去)进行氨气与氧气在不同条件下反应的实验.

(1)用装置A制取纯净、干燥的氨气,大试管内碳酸盐的化学式是 ;碱石灰的作用是 .

(2)将产生的氨气与过量的氧气通到装置B(催化剂为铂石棉)中,用酒精喷灯加热:

①氨催化氧化的化学方程式 ;试管内气体变为红棕色,该反应的化学方程式是 .

②停止反应后,立即关闭B中两个活塞.一段时间后,将试管浸入冰水中.试管内气体颜色变浅,请结合化学方程式说明原因 .

(3)将过量的氧气与A产生的氨气分别从a、b两管进气口通人到装置C中,并在b管上端点燃氨气:

①两气体通入的先后顺序是 ;其理由是 

②氨气燃烧的化学方程式是 .

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When I was looking for a Christmas present for my daughter in a toy store, a nicely dressed little girl, with some money in her little hand, was looking at some beautiful dolls. When she saw a doll she liked, she would ask her father if she had enough money. He usually said yes.
At the same time, a boy, with old and small clothes, was looking at some video games. He, too, had money in his hand, but it looked no more than five dollars. Each time he picked up one of the video games and looked at his father, he shook his head.
The little girl had chosen her doll, a very beautiful one. However, she noticed the boy and his father. She saw the boy give up a video game with disappointment and walk to another corner of the store.
The little girl put her doll back to the shelf and ran over to the video game. After she talked to her father, she paid for the video game and whispered(耳语) to the shop assistant.
So the boy got the video game that he wanted for free—he was told it was a prize from the store. He smiled happily, although he felt it was so incredible. The girl saw all this happen. She smiled, too.
When I walked out of the store to my car, I heard the father ask his daughter why she had done that. I would never forget their short talk. " Daddy, didn’t Grandma want me to buy something that would make me happy"
He said, "Of course, she did. "
"Well, I just did!" With that, the little girl started skipping towards their car happily.

Which of the following is TRUE according to the story

A.The little girl was kind and helpful.
B.The video game was a prize from the store.
C.The writer paid for the video game for the boy.
D.The boy bought the video game himself from the store.

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完整性是保证在网络传输、存储时数据完整,没有被修改、插入或删除。

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君子结交富人的原则是()。

A、巴结

B、奉承

C、不巴结

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