Spider netting, in the branches of the tree. Winds up, blown away the silk. Spiders don't idle, battalion of again and again. People and not mian, spider
Everything is according to its own objective law step by step development, the development of the technology generally follow the demand increase, demand again - to improve and demand more than the development also will never halt. Microcomputer five anti blocking the development of technology is no exception. So-called "offline" operation mode "refers to a computer in the process of operation keys and there is no communication between main control system, this kind of mode computer keys can only be executed sequentially deposited operation ticket. Due to offline mode lose protection, computerized anti-malfunction device misoperation accident of many examples, such as a power plant to turn a hot standby line outage maintenance operation, in the process of operation personnel to site operation due to the cause of the secondary circuit breaker reclosing, the operation personnel failed to received notice, still use computer keys by persisting in the operation ticket open circuit breaker side to prevent false lock, then away breaker, breaker belt load pull the accident cause. A substation performs a line outage overhaul operation, operators of a computer key through to electric lock loop and disconnect circuit breaker, breaker then used computer keys to open the line side to prevent false lock, open knife switches, a breaker belt load pull the accident is caused, after analysis of the reason is caused by circuit breaker contact not fully release.
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