A.x+2y+5=0 B.2x+y-5=0 C.2x-y=0 D.x+2y

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问题 A.x+2y+5=0B.2x+y-5=0C.2x-y=0D.x+2y-5=0

选项 A.x+2y+5=0
B.2x+y-5=0
C.2x-y=0
D.x+2y-5=0

答案 D

解析
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