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【多选题】
差分对模拟相乘器可以用于实现A.
鉴相及鉴频
B.
解调
C.
调制
D.
混频
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】用一致对来考察两个变量n对等级数据的相关程度的指标是( )。
A.
Kendall tau
B.
Spearman 等级相关系数
C.
Kendall’W
D.
K-S 值
【简答题】中学教育学古代埃及设置最多的是什么学校？
【简答题】I have many books .
【简答题】One of the best-known American writers of children's books is Alfred Strong, or Doctor Strong, as he is better known to readers everywhere. Now, an art show called 'Doctor Strong From Then to Now' is ...
【简答题】One of the best-known American writers of children's books is Alfred Strong, or Doctor Strong, as he is better known to readers everywhere. Now, an art show called 'Doctor Strong From Then to Now' is ...
【简答题】按照目的任务和国外的惯例，健美操运动分为（）两大类，在我国还有一种表演性健美操。健身性健美操包括有（），竞技性健美操有（）五项。
【简答题】The ability to keep calm is one of his many _________ (strong).
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