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【多选题】
Kafka是一种高吞吐量的分布式发布订阅消息系统，是Apache基金会开源的消息队列，该框架由（ ）编写而成。
A.
Python
B.
Java
C.
Scala
D.
C++
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参考答案：
参考解析：
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【单选题】Tim Richter and his wife, Linda, had taught for over 30 years near Buffalo, New York—he in computers, she in special education. "Teaching means everything to us", Tim would say. In April 1998, he lear...
A.
a well-known surgeon
B.
C.
B. a mother of a four-year-old
D.
C. a singer born in Tennessee
E.
D. a computer programmer