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人工主动免疫 2 . 人工被动免疫 3 . 计划免疫 4 . DNA疫苗 5 . 亚单位疫苗 6 . 抗体靶向疗法 7 . 过继免疫治疗 8 . 生物应答调节剂
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【单选题】―He hardly has any friends to play with , _____ he? ―_______! That’s why he feels lonely from time to time.
A.
hasn’t, No
B.
doesn’t, Yes
C.
does, Yes
D.
does, No
【简答题】He has no friends and he feels lonely.
【简答题】The students in America usually begin high school at the age of 13 or 14. Some leave at the age of 16. But most finish the 4-year high school study. They do not get their first full-time work or begin...
【单选题】Pyramid selling is ______ in China and some other countries.
A.
illegal
B.
unconstitutional
C.
illegitimate
D.
unlawful
【单选题】设二阶微分环节G(s)=s2+2s+4,则其对数幅频特性的高频段渐近线斜率为( )
A.
-40dB／dec
B.
-20dB／dec
C.
20dB／dec
D.
40dB／dec
【单选题】血竭置白纸上用火烘烤不会出现的特征( )
A.
熔化
B.
有扩散的油迹,有松香气味
C.
对光照视呈鲜艳的血红色
D.
以火燃烧则发生烟气
E.
以火燃烧发生的烟气呛鼻
【单选题】Some areas of the sites have a "no noise" rule after
A.
9.30 p.m.
B.
10.00 p.m.
C.
10.30 p.m.
D.
11.00 p.m.
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