选择题: A.2x-y+2=0 B.2x+y+1=0 C.2x+y-3=0 D.2x-y+3=0 题目分类:土木工程师(水利水电) 题目类型:选择题 号外号外:注册会员即送体验阅读点! 题目内容: A.2x-y+2=0B.2x+y+1=0C.2x+y-3=0D.2x-y+3=0 参考答案: 答案解析: