问题详情:命题“x>0,都有x2-x≤0”的否定是( )A.x>0,使得x2-x≤0 B.x>0,使得x2-x>0C.x>0,使得x2-x>0 D.x≤0,使得x2-x>0【回答】B知识点:常用逻辑用语题型:选择题