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【多选题】
关于细胞因子的叙述正确的是A.
细胞因子包括IFN、IL、CSF、TNF、GF和趋化因子
B.
大多数CK是由活化的细胞合成和分泌的
C.
主要通过自分泌和旁分泌发挥作用
D.
一种细胞因子只作用于一种细胞
E.
细胞因子生物活性极强
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皮皮学刷刷变学霸
举一反三
【单选题】氯沙坦的作用机制是 ( )
A.
选择性地与AT1受体结合,阻断 AT1受体
B.
抑制ACE
C.
抑制细胞外Ca2+的内流
D.
阻断β受体
E.
选择性阻断突触后膜α1受体
【单选题】针对下面句子关于style的改写，哪个是正确的？You can use this model to analyze the effects of several parameter changes.
A.
This model is suitable for the analysis of the effects of several parameter changes.
B.
You can analyze the effects of several parameter changes using this model.
C.
One can use this model to analyze the effects of several parameter changes.
D.
Using this model to analyze the effects of several parameter changes.
【单选题】在Word 2010编辑状态下进行分栏操作,应首先选定要分栏的段落然后单击( )选项卡。
A.
“插入”选项卡
B.
“视图”选项卡
C.
“页面布局”选项卡
D.
“开始”选项卡
【单选题】针对下面句子关于style的改写，哪个是正确的？You can use this model to analyze the effects of several parameter changes.
A.
This model is suitable for the analysis of the effects of several parameter changes.
B.
You can analyze the effects of several parameter changes using this model.
C.
One can use this model to analyze the effects of several parameter changes.
D.
Using this model to analyze the effects of several parameter changes.
E.
Develop this model to analyze the effects of several parameter changes.
【单选题】—These Maths problems are too hard to ______. Can you help me? —There are many ways, but the most important is to try your best.
A.
work out
B.
come out
C.
put out
D.
look out
【简答题】Why is it more difficult to yze, and therefore mitigate, the effects of terrorism?
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