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【单选题】
新中国成立后建立的第一家旅行社是()A.
中国旅行社
B.
B,中国国际旅行社
C.
华侨服务社
D.
中国青年旅行社
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举一反三
【简答题】传递细胞:
【简答题】传递细胞最显著的特征是______，是与______功能有关。
【简答题】传递细胞的特征和功能是什么?
【简答题】medical technologies
【简答题】传递细胞
【简答题】传递细胞
【单选题】With multimedia technologies, people can do the following EXCEPT
A.
throwing away their radios and TVs.
B.
holding meetings or talking with others far away.
C.
learning new concepts and technologies more easily
D.
working more effectively with powerful office applications.
【简答题】传递细胞最主要的特点是______，其功能是______。
【单选题】Which of the following is true of push and pull technologies?
A.
The early Web was characterized by pushing static information.
B.
In push technologies, organizations provide users with standardized information.
C.
In pull technologies, organizations provide users with customized information based on each user's individual profile.
D.
In pull technologies, users research, find, request, and retrieve the information they want.
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