治疗脑部细菌感染效果较好的摘胺药物是（） A.SMZ B.SD C.SM2 D.SG_爱下问搜题

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问题单项选择题

治疗脑部细菌感染效果较好的摘胺药物是（）

A.SMZ

B.SD

C.SM2

D.SG

E.SMM

答案

参考答案：B

完形填空

     Manners are important to happy relations among people. No one   1   a person with bad
manners. A   2   with good manners never laughs at people when they are in trouble. Instead, he  3
to help them. When he asks for something, he says "  4  ". And when he receives something, he  5
says "Thank you".  He does not interrupt (打扰)  6   people when they are talking, He does not talk
loudly or laugh loudly   7   public. When he sneezes or spits(吐痰) , he uses a   8  .  If he is late, he
  9   make an apology to the teacher either at the time   10   after class.

( )1. A. thinks
( )2. A. boy
( )3. A. tries
( )4. A. Give me
( )5. A. never
( )6. A. every
( )7. A. on
( )8. A. book
( )9. A. should
( )10. A. or

B. likes
B. girl
B. needs
B. Please
B. sometime
B. some
B. at
B. cup
B. will
B. nor

C. hates
C. person
C. has
C. Yes
C. usually
C. his
C. of
C. handkerchief
C. could
C. and

D. finds
D. people
D. enjoys
D. Hello
D. still
D. other
D. in
D. hand
D. may
D. but

单项选择题

有关^99mTc的标记下列不准确的是（）。

A.还原剂（如亚锡）量与pH值对^99mTc标记非常重要

B.直接标记法常用的还原剂有氯化亚锡、氟化亚锡、酒石酸亚锡或柠檬酸亚锡等

C.某些化合物的标记需要在pH值较高的条件下进行，而pH值较高时容易形成^99mTc-Sn胶体，可用间接交换法

D.对于不同原子的配体与^99mTc的络合能力，S>N>O>X（卤原子）

E.^99mTc标记常用的双功能螯合剂有：MAG₃衍生物、肼基联氨基烟酰胺（HYNIC.、N₂S₂类等