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他见皇帝和两位大人都着急，因而想一气说完。他将他们兄妹投军后，胡钧和汪魁对他们的种种关照和救助，以及后来他们出生入死、并肩杀敌的情形一一说了。I/O multiplexing refers to using a thread to check the ready state of multiple file descriptors (Socket), such as calling select and poll functions, passing in multiple file descriptors, returning if one file descriptor is ready, otherwise blocking until timeout. After getting the ready state, the real operation can be executed in the same thread or thread execution can be started (such as using thread pool).Why is feedback so useful for deliberate practice? In the article "Failure is not the Mother of Success, Success is the Mother of Success" by Teacher Wan Weigang, it is stressed that feedback is divided into two types: one is to accuse you of not being able to do it yourself, and this feedback will bring bad effects. 2 refers to the right thing, not that you can't do it, but that what you do can be better promoted through improvement. Effective feedback is that "good is failure" needs to meet three conditions. 1. Timely, if it is wrong, someone will point it out to you immediately. It is not right for people to be right for things. The cost of mistakes is small. This is more like the green light thinking in the learning mentality. To distinguish between "I" and "my view of behavior". I am very good myself, and my behavior and opinions can be changed.香儿姑娘（妹妹）。Ruiyi recently learned from many sources that many institutions that cultivate children's thinking ability have ended a new round of financing or have entered a new round of financing process. Even when the "capital winter" comes, the thinking ability training track still maintains a strong momentum of "absorbing money". So what kind of investment logic does capital have for children's thinking ability training track? What do you expect from the return on investment?要是一直这样下去，可真不是个办法。