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俞大猷也不追，只收刀提枪上马，匆匆回马吼道：撤。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:杨长帆不计前嫌，命胡宗宪主导澎湖政事，虽老首领们心怀不满，但如今杨长帆势大，外加这事业还真做得风声水起，大有洗白之势，便也不多计较。阎锡山主持“清东陵文物展览会”宣布委任那辛为保护文物全国委员会会长。会后，阎锡山命将珍宝登记装箱，派于跃先押送到保文会。溥仪得知后，万分气愤。日本人则说“明取不如暗夺”。不久传闻说保文会被洗劫一空。法庭上，那辛被指控勾结土匪盗宝。为证实真假，那辛在监督下开箱查验。封条未动的珍宝箱内竟然是一堆破砖烂瓦。那辛惊呆了。至此，那辛被推上了被告席，而真正的祸首却逍遥法外。3. If the above methods cannot work, uninstall WeChat. After uninstallation, download WeChat installation package, then reinstall the letter and log in again.I was very impressed by what happened later, After the flame was ejected, two to four short-lived salamanders were formed in the air. But the area covered is not large, But the big wasp was obviously afraid of the high temperature, After seeing the salamanders coming up, they withdrew to both sides like crazy. At that time unexpectedly in the air to get out of the way of two 'gap', We were shooting and watching, In fact, I have no idea, Because the '74 spray' is used to spray so many big wasps flying around in the air, The efficiency is very low when you think about it. But that's when the miracle happened, Although the flame has a short range, For a short period of time, However, due to the sudden injection, So it still ignited dozens of big wasps, These big wasps are more flammable than gasoline when exposed to flames, Immediately turned into "small fireballs" flying in the air, However, the temperature of the '74 spray' flame was quite high. I once saw a Vietnamese soldier with a full face sprayed directly by it. It was not burned to death by the flame, but melted directly on the spot. It really melted away, leaving no ash left, leaving a scorched black mark on the place where he was sprayed.Time relay, English name is me relay, is a relay that generates action only after the input action signal is added or removed, and the output circuit needs a specified accurate time. It is applied to low circuits to switch on or off high voltage and high current circuits. Time relay is also an electrical appliance that uses electromagnetic principle or principle to realize delay control, including air damping type, electric type, electronic type and other types.