题目

Shopping for clothes is not the same experience for a man as it is for a woman. A man goes shopping because he needs something. His purpose is settled and decided in advance. He knows what he wants, and his objective is to find it and buy it; the price is a secondary consideration. All men simply walk into a shop and ask the assistant for what they want. If the shop has it in stock, the salesman promptly produces it, and the business of trying it on follows at once. All being well, the deal can be and often is completed in less than five minutes, with hardly any chat and to everyone's 下面是同学们做过的一些物理实验情景图，请你对这些实验现象分别进行分析并得出结论。    (1)图27：  闭合开关，小磁针发生偏转。说明：           。    (2)图28：迅速击打硬纸板，板上的鸡蛋落入杯中。说明：             。    (3)图29：将两滴等量的水分别滴在两块玻璃板上，其中被加热的水滴先消失。说明：                。