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【单选题】
下列成分中与颗粒性抗原结合后可出现凝集现象的是:A.
IgG的H链
B.
IgG的L链
C.
IgG的Fc段
D.
IgG的F(ab’) 2 片段
E.
IgG的VH和VL区
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【多选题】Everyone knows that fish is good for health.1( ) But it seems that many people don’t cook fish at home.Americans eat only about fifteen pounds of fish per person per year, but we eat twice as much fis...
A.
Do not buy it.
B.
The easiest is to steam it.
C.
This is how you can do it.
D.
It just requires a little knowledge.
E.
The fish will go bad within hours.
F.
When buying fish,you should first smell it.
G.
The fats in fish are thought to help prevent heart disease.
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