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商品交易指数之间的差值不代表实际支付金额的差值，仅代表高低。（ ）
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SKU是指商品的销售属性集合，假如一款商品有S、M、L三个规格，则对应三个SKU。（ ）
为了避免顾客产生抵触心理，关联推荐只能选择与顾客购买商品功能相似的商品。（ ）
Please fill in the blanks according to hints given in brackets.The New Year （1.庆祝活动) Around the WorldNew Year’s Day is one of the few universal （2.公共假日）in the world, when most people do not need to （3.上班）. While some of us celebrate it only（4.一天一夜）, for others it may be a long festival lasting for about one week. In the last 30 years businessmen have （5.借机)to promote more goods and to hold lots of （6.年底促销活动). （7.大多数人)would then take their time to go shopping （8.兴高采烈地).
发现一次击穿发生时如不有效地限制电流,Ic增大到某个临界点时会突然急剧上升,同时伴随着电压的陡然下降,这种现象称为( )。
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