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Saturday, September 17, 2022
Saturday, September 17, 2022
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阀控式铅酸蓄电池的主要结构包括()、()、()、()和()等五部分组成。...
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两个电阻一个为3KΩ、一个为6KΩ,它们串联的等效电阻是(),它...
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Saturday, September 17, 2022
Saturday, September 17, 2022
铅蓄电池放电完毕后,必须在24小时内进行的充电叫()。A、初充电B、过量充电C、正常充电D、补充充电...
Thursday, April 27, 2023
蓄电池内电解液比重低于正常值,可能因为是()A、过充电B、过放电C、均衡充电过长...
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电度计量用的电流互感器,应采用(),其准确度等级不应低于()。...
Saturday, September 17, 2022
Saturday, September 17, 2022
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关于数字电路中的“1”和“0”,下列叙述不对的是()。...
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为什么对于电信局(站)中的配电变压器,二次线圈额定电压位400/230V,而用电设备受电端电压为380/220V。...
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Saturday, September 17, 2022