Saturday, April 27, 2024
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新型的少油断路器都没有压油活塞(或称为喷射器),这是为()而设的。A、提高开断容量B、提高开断速度C、熄灭大电流D、熄灭小电流...
Saturday, April 27, 2024
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代号为203的轴承内径为()mm。A、15B、17C、23D、25...
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在少油开关的油箱上(如SN2)都有一条铜焊缝,为什么?...
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硬母线是怎样连接的?为什么不同金属的母线连接会氧化?怎样防止?...
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