长尾效应是指那些原来不受到重视的销量小但种类多的商品或服务由于总量巨大,累积起来的总收益超过主流商品的现象。
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店铺层级越高,可能分配到的系统流量就会越多。
A. 对
B. 错
80/20法则认为:原因和结果、投入和产出、努力和报酬之间本来存在着无法解释的不平衡
A. 对
B. 错
The _______ of the bag is too much for a six-year-old boy.
A. weigh
B. weight
C. overweight
D. weighing
The wine is now_______ at 2.69 yuan.
A. on offer
B. in special offer
C. on special offer
D. special offer