A.a=-a,b=4 B.a=4,b=-12 C.a=2,b=-8 D.a=1,b=-6B

免费考试题库2020-05-20  1

问题

选项 A.a=-a,b=4B.a=4,b=-12C.a=2,b=-8D.a=1,b=-6

答案B

解析[img]/upload/tiku/131/602044_1.jpg[/img][img]/upload/tiku/131/602044_1_1.jpg[/img][img]/upload/tiku/131/602044_1_2.jpg[/img]
转载请注明原文地址:https://ti.zuoweng.com/ti/QSCMKKKQ