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The hardware of the cleaning equipment has a special network processor chip, a specially optimized operating system and TCP/IP protocol stack, which can handle very large traffic and SYN queues.水木娃娃探索宇宙之谜动画主要是围绕着太阳系中的星体对象展开，旨在推广和普及宇宙知识，开发小朋友的想象力和对探索未知世界的兴趣。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:有得必有失，这是一个不争的事实，即便是心中态度的很是不愿意，可还得面对这样一个残酷的事实。At the moment, let's do an experiment.Magnetic force of grade 10 and magnetic force of grade 8