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Metro BIMBIM Technology BIM CaseThe difference between them is that each policy class in the policy mode is equal and parallel, and there is no connection between them. Therefore, customers must be familiar with the functions of these policy classes so that customers can actively switch algorithms at any time. However, in the state mode, the behavior corresponding to the state and the state has long been encapsulated, and the switching between states has long been stipulated to be completed. The "change of behavior" occurs within the state mode. For customers, they do not need to know these details. This is what state patterns do书页中露出书签尾端丝线，显是有人正读它，然后顺手放在那的。Three, two, a little fairy小说中，杨过进入古墓，说出自己的悲惨遭遇，孙婆婆听了眼泪哗哗，可是小龙女却是一脸冷漠，直接开口就是送杨过出去。这其中有风险，也有不少的机会，只要利用好了，我们能够向前一大步。近二十年前，汪直抛下了刚刚出生不久的汪滶背井离乡，去实现自己的野心。