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【单选题】
Tell whether the function is even or odd. If it is neither, so indicate.A.
even
B.
odd
C.
neither
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Unit 2.mp3: What was Mr.Stevenson’s response to the young couple’s refusal?
A.
He was not disappointed at all because he was accustomed to it
B.
He couldn’t hide his disappointment
C.
He felt disappointed but smiled and then moved to the other side.
D.
He smiled and started to use his power of persuasion.
【简答题】人力手推调车时，禁止在轨面高于地面（）以上的线路上推车。
【简答题】空函数func的表示方法是( ),他是最简单的函数定义。