糖尿病的形成原因有多种，下图中①、②是由免疫失调引起糖尿病的两种机理其中甲、乙、丙表示不同种类的细胞，请据圈回答下列问题：
图中甲细胞直接来源于（）。这类细胞可以产生不同抗体的根本原因是（）。
要到微信小程序或APP查看答案哦。
实在点不开答案，可以分享到微信，
在微信里面查看答案。
APP具体操作流程为：
完成下列单位换算．
（1）100Ω=______kΩ=______MΩ；
（2）15kΩ=______Ω=______MΩ；
（3）7.8MΩ=______kΩ=______Ω．
在测量交谈噪声时，若风速较大，则传声器：（）
A．须加风罩
B．须降低高度
C．须适当转换方向
D．须增加高度
在fireworks中，在固定宽度文本块或自动调整大小文本块之间切换可以进行下面哪个操作？（）
A.在文本块内部双击
B.双击该文本块右上角的圆或正方形
C.拖动该文本块右上角的圆或正方形
D.在文本块外框上双击
在听取考核对象个人的述职报告的基础上，由考核对象的上级主管、同事、下级以及与其有工作关系的人员，对其工作绩效作出评价，然后综合分析各方面的意见得出该考核对象的绩效考核结果，这是( )。
A．民主评议法
B．书面鉴定法
C．关键事件法
D．比较法
When I tell people that I’m a professor of communication, they often are confused (1) what the term "communication" means. Many people think mass communication is the (2) type of communication, but mass communication is only one form of communication. The study of mass communication focuses on messages that are (3) over (4) such as television, newspapers, and radio. Other areas of (5) focus on the messages individuals send to one another. Some of the major contexts in which communication is studied (6) the interpersonal context, the organizational context, and the intercultural context. A scholar studying (7) communication, for example, might examine how married couples (8) with misunderstandings and the effects these misunderstandings have on (9) satisfaction. Organizational communication scholars, on the other hand, might study (10) the communication styles used by managers and their subordinates influence productivity and efficiency in a company or factory.
My area of specialization is intercultural communication. Intercultural communication is an (11) field of study which incorporates research from disciplines (12) as social psychology, sociology, cultural anthropology, sociolinguistics, and of course, communication. One of the (13) important areas of research addressed by intercultural scholars is how misunderstandings can be (14) when people communicate with Others from different (15) . To understand the process of intercultural communication, we must study how individuals’ cultural backgrounds (16) their communication behaviors.
The area of intercultural communication is a relatively new (17) of study even in the United States. While most Chinese students studying communication in the United States (18) on mass communication, there are some who are interested in intercultural communication and plan to return to China to teach and (19) research in this area. The work of these Chinese scholars on intercultural communication is important because it will help improve (20) between Chinese and Americans in the future.