问题:
若-3x 2my 3与2x 4y n是同类项,则|m-n|的值是
[ ]
A.0
B.1
C.7
D.-1
若-3x 2my 3与2x 4y n是同类项,则|m-n|的值是
B.1
C.7
D.-1
[ ]
A.0 B.1
C.7
D.-1
参考答案: