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【多选题】
多选题-关于CD4+T细胞的增殖分化和作用描述正确的是A.
IL-12可促进Th0向Th1细胞分化
B.
CD4+T细胞不包括调节性T细胞
C.
Th1细胞主要介导细胞免疫应答
D.
Th2细胞主要介导体液免疫应答
E.
IL-4可促进Th0向Th2细胞分化
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【单选题】Which of the following best states the goal of American education?
A.
To teach every learner some practical skills.
B.
To provide every learner with rich knowledge.
C.
To give every student the opportunity to fully develop his or her ability.
D.
To train every student to be a responsible citizen.
【单选题】Which of the following best states the goal of American education?
A.
To teach every learner some practical skills.
B.
To provide every leamer with rich knowledge.
C.
To give every student the opportunity to fully develop his／her ability.
D.
To train every student to be a responsible citizen.
【简答题】老师在使用一平三端投票上课遇到这些问题,应该怎么解决? 1、投屏后班级二维码闪现,直接跳转到PPT 2、使用其他应用无法快速回到PPT投屏页面 3、测验的添加,作业的发放老师觉得手动手机输入不方便 4、使用过的活动,如何再次调用发送
【单选题】患者男性，反复呕吐。测得血钠131mmol/L，血钾3mmol/L，应诊断为（ ）
A.
低钾血症，高渗性脱水
B.
高钾血症，重度缺钠
C.
低钾血症，轻度缺钠
D.
低钾血症，中度缺钠
E.
血钾正常，等渗性脱水
【单选题】It’s__________ that is drawing people to e-books and that is what will kill printed books.
A.
format
B.
convenience
【简答题】Stress (压力) is everywhere in our everyday life. Not only men have it, but also women and young people. The most important reasons of stress are: diseases, exams, money, getting married, moving ...
【单选题】Every citizen in a democracy, it is said, must have equality, and the will of the majority is supreme, thus the poor have more power than the rich because __________.
A.
it is their turn to rule
B.
their needs are greater
C.
there are more of them
D.
the rich are ever wicked
【多选题】根据《高层民用建筑设计防火规范》的规定，以下叙述符合规范要求的是（）
A.
消防电梯前室的面积，居住建筑不应小于4.50平方米，公共建筑不小于6.00平方米。
B.
消防电梯与防烟楼梯间合用前室时，其面积居住建筑和公共建筑均为10平方米。
C.
消防电梯从首层到顶层的运行的时间不应超过60s。
D.
当高层建筑需设消防电梯，且每层建筑面积超过4500平方米时，应设置3部消防电梯。
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