对于核和放射突发污染事件中救援人员应了解的减少受照剂量的三原则是（） A.在放射环境

发布时间：2017-05-24 11:35 │ 来源：www.tikuol.com

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问题：

对于核和放射突发污染事件中救援人员应了解的减少受照剂量的三原则是（）

A.在放射环境中消耗的时间要减至最少，必要时轮换作业

B.保持与放射源最大距离

C.只要有可能，就应充分利用屏蔽防护

D.离开污染区时，不需要接受体表和衣服的污染监测

E.可以在污染区内吃、喝和抽烟

考点：急诊医学(医学高级)医学高级急诊医学（副高）特训密卷二

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       Vitamins(维生素)  are a discovery of the 20th century. A hundred years  1   , no one knew
anything   2   them. The vitamins are   3   by letters of alphabet. Vitamin A   4   by the eyes. There
is vitamin A in milk, butter and green vegetables It 5   by the body.
       Vitanun B must be supplied (提供)  6   by some of our food. The skins  7   grains of all sorts
have vitamin B in them.
       Vitamin C is very important   8_ the body. Without it   9   teeth will become loose and their
arms and legs become weak. Oranges and tomatoes 10   vitamin C in them.
       There are other vitamins.  But these A, B,C are the most important.

( )1. A. before
( )2. A. about
( )3. A. naming
( )4. A. needs
( )5. A. stores
( )6. A. times
( )7. A. of
( )8. A. in
( )9. A. people
( )10.A. has

B. front
B. of
B. named
B. need
B. be stored
B. in not time
B. to
B. at
B. peoples'
B. have

C. ago
C. in
C. is named
C. is needed
C. can store
C. all the time
C. on
C. with
C. people's
C. there is

D. ahead
D. for
D. names
D. was needed
D. can be stored
D. any times
D. in
D. to
D. peoples
D. there are

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在真空中A点有一正电荷C，把检验电荷C的负电荷置于B点，他们相距离m，如图所示。求：

小题1:q受到的电场力；

小题2:q所在点的电场强度；

小题3:只将B处的检验电荷q移走，求此时B点的电场强度。

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关于汗腺，叙述正确的是（）。

A.小汗腺属于全浆分泌腺

B.小汗腺开口于毛囊

C.顶泌汗腺分泌方式有局部分泌、顶质分泌和全质分泌3种方式

D.小汗腺分泌部由明细胞和暗细胞构成

E.顶泌汗腺存在于下肢部

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1988年，法国政府提出了哪些新的提高教师社会经济地位，吸引大学毕业生当教师的措施？

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