关于在血液层流中说法正确的是：（）A.血液各点流速相等 B.血管分叉处易发生层流 C

发布时间：2019-07-25 15:46 │ 来源：www.tikuol.com

题型：单项选择题

问题：

关于在血液层流中说法正确的是：（）

A.血液各点流速相等

B.血管分叉处易发生层流

C.雷诺数（NR）大于3000

D.血液各点流动方向杂乱无章。

E.血流各点的流动方向与血管长轴平行

考点：医学三基(医技)放射学放射学题库

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基础型课程注重学生基础学力的培养，即培养学生作为一个公民所必需的“三基”为中心的基础教养。“三基”指的是( )。

A．读、写、算
B．读、写、画
C．读、画、算
D．写、画、算

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题型：单项选择题

完形填空。

     A man found the cocoon (茧) of a moth (蛾). He took it home so that he could    1 the moth come
out of the cocoon. On that day a small   2 appeared. He sat and watched the moth for several hours as
the moth struggled to   3   the body through that little hole. Soon it seemed to stop making any progress.
It appeared as if it had    4 as far as it could and it could go no further. It just seemed to be stuck. So the
man, out of his kindness, decided to help the moth. He took a pair of scissors and cut off the _5 _ bit of
the cocoon. The   6   then came out easily. But it had a swollen body and small, shriven (无用的) wings.
The man continued to watch the moth because he expected that, at any moment, the wings would enlarge
and   7   to be able to support the   8 , which would get smaller in time. Neither happened! In fact, the little moth spent the rest of its life  9 around with a swollen body and shriven wings. It was   10   able to fly.
     What the man in his kindness   11   was that the small cocoon and the   12_of the moth to get through
the   13   opening was a way to push fluid (液体)   14   the body of moth   15   its wings so that it would
be ready to fly   16   it got out of the cocoon. Freedom and    17   would come only after the struggle. By
taking the struggle away, he also took away the moth's health.
     Sometimes struggles are exactly what we need in our lives. If we were to   18 our lives without any
difficulties, we would become disabled. We would not be as    19 as what we could have been. Give
every opportunity a chance. Leave no room for   20   .

( )1. A. help
( )2. A. opening
( )3. A. push
( )4. A. got
( )5. A. covering
( )6. A. moth
( )7. A. lessen
( )8. A. standing
( )9. A. flying
( )10. A. already
( )11. A. shouldn't do
( )12. A. crawling
( )13. A. tiny
( )14. A. in
( )15. A. into
( )16. A. after
( )17. A. courage
( )18. A. stand on
( )19. A. great
( )20. A. regrets

B. protect
B. line
B. draw
B. done
B. remaining
B. butterfly
B. widen
B. flight
B. crawling
B. certainly
B. thought
B. struggle
B. beginning
B. on
B. to
B. once
B. hope
B. get on
B. determined
B. death

C. watch
C. moth
C. make
C. tried
C. shell
C. cocoon
C. expand
C. themselves
C. walking
C. never
C. did
C. fight
C. right
C. by
C. in
C. before
C. flight
C. go through
C. brave
C. failure

D. see
D. butterfly
D. force
D. struggled
D. skin
D. worm
D. shorten
D. body
D. lying
D. seldom
  D. didn't understand
D. force
D. above
D. from
D. onto
D. until
D. survival
D. live
D. strong
D. wishes

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题型：单项选择题

将人格分为内向型和外向型的是（）

A、荣格

B、谢尔顿

C、威特金

D、霍兰德

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题型：单项选择题

变压器是将一种交流电转换成同频率的另一种( )的静止设备。

A．直流电

B．交流电

C．大电流

D．小电流

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题型：单项选择题

(一) 阅读下面短文，回答下 * * 道题。
德军剩下来的东西
战争结束了。他回到了从德军手里夺回来的故乡。他匆匆忙忙地在街灯昏黄的路上走着。一个女人捉住他的手，用吃醉了酒似的口气对他说：“到哪儿去是不是上我那里”
他笑笑，说：“不。不上你那里——我找我的恋人。”他回看了女人一下。他们两个人走到路灯下。
女人突然嚷了起来：“啊!”
他也不由地抓住女人的肩头，迎着灯光。他的手指嵌进了女人的肉里。他们的眼睛闪着光；他喊着“约安!”把女人抱起来了。

下列分析错误的一项是( )。

A．女人和他搭话，可能是想和他交易

B．他“笑笑”，是因为战争胜利后，他以为很快就可以见到自己的恋人，心情十分愉快

C．他回看了女人一下，是因为他发现女人长得很漂亮

D．他抱起女人的同时既难过，又决定勇敢地抚平战争带给女人的创伤

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