在线零售成功的关键是（）
A．树立品牌
B．减少库存
C．正确定价
D．提高速度
E．大量定制营销
参考答案：A, B, C, E
It was not until the entrance exams were in sight that that I had so many books to cover and so many exercises to finish.
A．I realized
B．did I realize
C．had I realized
D．I had realized
静电放电抗扰度试验对电子式电能表会产生哪些影响？
