单项选择题 3. What determines whether the buyer is satisfied or dissatisfied with a purchase? The answer lies in the relationship between the consumer’s expectations and the product’s _____. A perceived performance B brand personality C  recognition D  consumer market

单项选择题 置位指令最多可以置位的元件数为255个。（ ）

问答题 物体微型化以后,其表面效应会相对[填空1],而体积效应则相对[填空2]。选填“增强”或“减弱”