酒店运管七定式中“你的价值就是”?()
A、解决问题
B、创造成果
C、锁定结果
D、忽略障碍,利用一切资源达成结果
参考答案:A, B, C, D
It was unfortunate that their new car ____ halfway to the airport.
A.broke off
B.got over
C.broke down
D.got away
已知:x2+mx+n=(x-2)(x-3)
(1)求m,n的值.
(2)求m(2m-3n)(2m+3n)-(m-3n)(m2+9n2)-(2m2-n2)(m+2n)的值.