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Wanjia main product booster cable ,Trouble light,Power cord.

2012 years electrical engineer examination counselling: electric power safety knowledge

What are the features of the relay protection?
Answer: (1) the relay protection devices on power system security's influence.
(2) the relay protection device of the control object is a close link between the large and complex system, the system of the monitoring and by the multitudinous secondary system to realize.
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HeDianCi pulse bombs weapon-" the second atomic bomb"

Electromagnetic pulse weapons claiming "the second atomic bomb", the world military power electromagnetic pulse weapons in the practical start of electronic information system and command and control system and network of great threat. Conventional type of electromagnetic pulse bombs have blew up, and HeDianCi pulse bombs-" the second atomic bomb "is to human approximation.

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