中毒型细菌性痢疾的主要发病机制是() A.严重脱水 B.微循环障碍 C.酸碱平衡紊乱

题型:单项选择题 A1型题

问题:

中毒型细菌性痢疾的主要发病机制是()

A.严重脱水

B.微循环障碍

C.酸碱平衡紊乱

D.电解质紊乱

E.细胞内液大量丢失

考点:儿科住院医师感染性疾病感染性疾病题库
题型:单项选择题 A1型题

阅读理解。

     When I was a foreign teacher in China, every day I taught English to my students and they taught me

about China. One day the topic turned to saying "I love you". I was shocked to learn that not one of my

students had said this to their mothers, nor had their mothers said it to them."Does your mom love you?"

"Of course," they answered.

     "How do you know?" was my logical question. They responded that their moms cooked and always

told them what they were doing wrong to show their caring. I was stunned.So mom's cooking and

criticizing read out as "I love you". "Then how do you say 'I love you' to her?" They agreed that getting

good grades, followed by god jobs would be how they showed their love.

     I come from a culture where most people are expressive enough, so I repeated these queries in classes

over time. Gradually, I began to get different response. Some of them had exchanged those sentiments

with their moms. One of my favorite stories of change came from a girl. When she came home from

university, her mother met her at the door and hugged (拥抱) her. This had never happened before, but

her mom said, "Now that you have gone I have more time to myself. I noticed that in some places mothers

and children hug each other and I decided it was a good idea and that I would begin hugging you."

      In my family we all say "I love you" a lot. While it is true that we often say the words without having

great depth of feelings at that moment, it is almost like a blessing we give each other. Those three little

words carry a world of meaning, even when said as a greeting, but most especially if they are the last

words we say to or hear from those we love.

1. The foreign teacher _____. [ ]

A. comes from America

B. is a young woman

C. is expressive enough

D. knows much about China

2. Chinese people prefer to show love by _____.[ ]

A. saying "I love you"

B. cooking

C. getting good grades

D. doing something helpful

3. In paragraph 4, what's the real meaning of the mom's hugging? [ ]

A. She is meeting her daughter at the door.

B. She loves her daughter and misses her.

C. She is glad that she has more time to herself

D. She finds it interesting to hug her daughter.

4. What's the main idea of the passage?  [ ]

A. Say "I love you" more to your family.

B. Say "I love you" a lot to Chinese people.

C. Say "I love you" as a greeting to others.

D. Say "I love you" without great depth of feelings.

题型:单项选择题 A1型题

如图所示,一质量M=1.0kg的砂摆,用轻绳悬于天花板上O点。另有一玩具枪能连续发射质量m=0.01kg、速度v=4.0m/s的小钢珠。现将砂摆拉离平衡位置,由高h=0.20m处无初速度释放,恰在砂摆向右摆到最低点时,玩具枪发射的第一颗小钢珠水平向左射入砂摆,二者在极短时间内达到共同速度。不计空气阻力,取g =10m/s2

(1)求第一颗小钢珠射入砂摆前的瞬间,砂摆的速度大小v0

(2)求第一颗小钢珠射入砂摆后的瞬间,砂摆的速度大小v1

(3)第一颗小钢珠射入后,每当砂摆向左运动到最低点时,都有一颗同样的小钢珠水平向左射入砂摆,并留在砂摆中。当第n颗小钢珠射入后,砂摆能达到初始释放的高度h,求n

题型:单项选择题 A1型题

心肌灌注显像极坐标靶心图,是根据下列哪种图像制成()

A.垂直长轴图像

B.水平轴图像

C.LAO45度图像

D.短轴断层图像

E.冠状断层图像

题型:单项选择题 A1型题

一些中国古代思想家认为:“一阴一阳之谓道。”“凡物必有合……有合各有阴阳。”“天地万物之理,无独必有对”,“万物莫不有对”。“有无相生,难易相成,长短相形,高下相倾,音声相和,前后相随。”简析上述论点包含的辩证法思想,阐明马克思主义哲学在这方面的基本原理及其对实际工作的指导意义。

题型:单项选择题 A1型题

The nurse is caring for a toddler with Down syndrome. To help the toddler cope with painful procedures, the nurse can

A.prepare the child by positive self-talk.

B.establish a time limit to get ready for the procedure.

C.hold and rock him and give him a security object.

D.count and sing with the child.

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