This text introduces category and reason of electrical breakdown, deals with the methods of checking up the power supply, electric circuit and equipment and gives out some concrete countermeasures.

介绍了电气故障的种类、产生的原因，详述了电源、电路、设备和元件故障的查找方法，对常用电气设备的故障原因、查找方法，做了具体的叙述。

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NextAdvisor used data from the 2010 Bureau of Labor Statistics customer spending survey to derive an average category breakdown.

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Medicare and Medicaid, programs for the country's seniors and poor respectively, take up nearly all of the "heath care" spending category in the income tax breakdown.

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