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1. Modify the database to emergency modeThe first scheme is to use the general coding method to realize the preloading technology of the picture. First, create the imgNode element, Then when the method myImage.setSrc is called, a preloaded picture is given to the picture first, and when the picture is loaded, the img element is assigned a value. The second scheme is implemented by using proxy mode. MyImage function is only responsible for creating img elements, proxy function ProxyImage is responsible for setting loading pictures for the picture, and when the picture is really loaded, myImage.setSrc method in myImage is called to set the path of the picture. The advantages and disadvantages between them are as follows:香荽和赵翔等在上房厅堂，见了这人。尽管是形势所迫，汉王也没有因此而怪罪。　　桑弘羊胸有成竹而不动声色，他将盐铁收为官营，坚实了大汉的财源。张汤的儿子张安锋芒毕露，独骑闯夜郎国，使“夜郎自大”的国王归顺汉朝，稳定西南； 当年长城边卖“羊肉梢子面”的老板儿子卜式，已成为关内最大的牧场主，慷慨捐资，毁家纾国； 归顺汉朝的浑邪王之子金日单力驯劣马，为汉武帝识拔，任为军马总监，为之平息叛乱，屡立奇功……而汉武帝周围，一批年青人也已长大成人：卫子夫的儿子太子刘据、卫子夫的女儿元元公主、李陵和胭脂留在中原的儿子李汉、霍去病和秋婵There were amateur lifters who failed because they could not get the order to "start" during the competition. After understanding, the referee believed that his heel was unstable and floated upward. Later, I tried weightlifting shoes with relatively high heels. Although I felt smoother after squatting, at the beginning of the movement, weightlifting shoes could not fundamentally solve the problem of deficiency, nor did I feel that shoes had any improvement on my performance. Therefore, it is difficult to say how important weightlifting shoes can play in the strength lifting with relatively wide standing distance and relatively large weight, and there is no need to blindly believe in weightlifting shoes.{