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【单选题】
关于CD103+DC的叙述错误的是A.
可诱导黏膜B细胞向IgA进行类别转换
B.
可产生TGF-B水
C.
可产生维甲酸
D.
诱导初始T细胞向Th17细胞分化
E.
诱导初始T细胞向Treg细胞分化
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皮皮学刷刷变学霸
举一反三
【单选题】Practice 3 Translate the sentences into Chinese. 9. Americans eat a lot of beef because there is plenty of land for raising cattle and their meat can be shipped cheaply for long distance...
A.
美国人大量食用牛肉是因为他们喜欢吃。
B.
美国人大量食用牛肉是因为他们有足够的土地来养牛，而且牛肉可以通过铁路廉价地长途运输。
【多选题】利用DNA 序列构建系统发育树的方法多种多样。以下方法中利用DNA 序列的遗传距离构建系统发育关系的是:
A.
最大简约法
B.
最大似然法
C.
邻接法
D.
贝叶斯法
E.
UPGMA 法
【判断题】Nene works in a factory where she picks crab meat from crabs. She is paid per day based upon the number of pounds of crab meat that she picks. Nene’s daily number of pounds of crab meat can be referre...
A.
正确
B.
错误
【单选题】Meat can be broadly classified ____________“red” or “white” depending on the concentration of myoglobin in muscle fiber.
A.
as
B.
of
C.
into
D.
from
【简答题】机器的________集中反映了机器的功能。
【简答题】Every country has its own dining customs. Americans feel that the first rule of being a 1 guest is to be on time. If a person is invited to dinner at six thirty, the hostess 2 him to be there at six t...
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