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Time relay is a kind of delay control relay, which does not immediately let the contact move after obtaining the action signal, but delays for a period of time before letting the contact move. Time relays are mainly used in various automatic control systems and start-up control circuits.I. Dangerous Sports Business Activities等回到桃花谷后山，碰见张宅的下人，说枣子已经摘完了，板栗便赶忙要回家。From the above command class code, we can see that any operation has an execute method to perform the operation. The above code uses traditional object-oriented programming to implement the command mode. The procedural request call of the command mode is encapsulated in the execute method of the command object. Have we found the above writing code a little cumbersome? We can do this using the callback functions in javascript, In object-oriented, The receiver of the command mode is saved as an attribute of the command object, and the command execution operation is agreed to call the command.execute method. However, if we use the callback function, then the receiver is closed in the environment where the callback function is generated, and the execution operation will be simpler. Only the callback function can be executed. Let's look at the following code:第二季中，爱情公寓的热闹大家庭又迎来了新的成员，而且各个都不是“省油的灯泡”。这使得本就多事的公寓掀起了一个又一个新的风波。时代在变，想法在变，话题也在变，但不变的是朋友伙伴间真挚的情感和青春岁月中遍地的阳光。新住户的加入让爱情公寓再起风波。一位是年龄性格与这群时尚男女截然不同的神秘老先生，另一位则是性格执著却总是惹祸的年轻小伙子。在对待新住户的态度上，爱情公寓的7位伙伴自然地分成了亲善派和反对派。同时，老住户的问题仍在延续：小贤快三十了，眼看好男人变成老男人，他终于决定追求自己命中注定的另一半。对约翰·米汉的前女友、前妻、警察侦探的进行了详细采访，描述了其长达数十年的令人毛骨悚然的犯罪生涯而是一场灾难，一个抉择，一场雷霆风暴……年轻人向徐宣问明情况之后，便带着人朝尹旭所在的方向走了过去，走近之后拱手冷冷说道：也不知对面的朋友如何称呼？只是今日何以要招惹徐家妹妹？招惹徐家妹妹，不仅仅是对徐家的挑衅与不敬，更是对我周家的不敬？周家，山阴周家？尹旭和苏岸不禁心中一惊。