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  2. A. 2x+2y B. x+y C.2x-2y D.x-y

A. 2x+2y B. x+y C.2x-2y D.x-y

最全题库2022-08-02  31

问题 A. 2x+2yB. x+yC.2x-2yD.x-y

选项 A. 2x+2y
B. x+y
C.2x-2y
D.x-y

答案 B

解析
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本试题收录于: 基础知识暖通空调和动力题库公用设备工程师分类

基础知识暖通空调和动力

公用设备工程师

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