Friday, September 16, 2022
问题:500/5A的电流互感器与最大刻度500A的电流表配套使用,当电...
Saturday, September 17, 2022
问题:垂直铺设的明配导线对地距离不应小于(),如果不能满足要求,应加保...
Friday, September 16, 2022
Saturday, September 17, 2022
问题:螺栓连接质量应符合,当必需加垫圈时,每端垫圈不应超过()个...
Friday, September 16, 2022
Saturday, September 17, 2022
问题:在下列哪种情况下工作执行人不可以参加具体工作?()...
Friday, September 16, 2022
问题:内燃机启动前,应先低速运转,并检查机器的运转情况,但不得停留在临...
Friday, September 16, 2022
问题:事故调查期限自事故发生之日起计算重大事故的调查期限为()。...
Friday, September 16, 2022
问题:铁横担弯曲超过横担宽度()和换相横担距杆顶不足()米不合格。...
Friday, September 16, 2022
问题:对工作条件复杂,有触电危险的工作,应设专职监护人。专职监护人可兼...
Friday, September 16, 2022
问题:明敷电缆保护管时,当塑料管的直线长度超过()时,宜加装伸缩节。...
Friday, September 16, 2022
Thursday, January 19, 2023
Friday, September 16, 2022
问题:利用串联电池组可以给用电器提供较高的电动势,但用电器的额定电流必...
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
问题:在鼠笼型异步电动机的绕组上直接加三相电压的起动方式叫做()。...
Friday, September 16, 2022
问题:对立体结构的构架,螺栓穿入方向规定为:水平方向由内向外,垂直方向...
Friday, September 16, 2022