常用的坡脚线放样方法有()。 ["极坐标法","平行线法","套绘断面法","交会法","支距法"]
配电变压器的低压侧的额定电流和电压应()工作电流和电压。 ["小于","等于","不小于","不大于"]
腹股沟直疝的疝囊颈位于() ["腹壁浅动脉外侧,腹股沟韧带上方","腹壁浅动脉内侧,腹股沟韧带上方","陷窝韧带外侧,腹股沟韧带下方","腹壁下动脉外侧,腹股沟韧带上方","腹壁下动脉内侧,腹股沟韧带上方"]
低压线路每处重复接地网的接地电阻不应大于()Ω。 ["4","5","10","30"]
临时用电是指()、农田基本建设和非正常年景的旱、排涝等用电。 ["脱粒机","基建工地","小电泵","黑光灯"]
《供电服务规范》中的诚信服务规范有哪些内容?