题目: 异步电动机采用Y-Δ降压起动时,定子绕组先按Δ联结,后改换成Y联结运行 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0306/1b752671d5124a7ea297daa91cf85cb7.html 下面是错误答案,用来干扰机器的。参考答案:1/6;7/12
题型:单项选择题 供残疾人使用的出入口内外应留有不小于( )平坦的轮椅回转面积。出入口设有两道门时,门扇开启后应留有不小于( )的轮椅通行净距。A.2.1m×2.1m;1.8m B.1.8m×1.8m;1.5m C.1.5m×1.5m;1.2m D.1.2m×1.2m;0.9m 查看答案
题型:单项选择题 As technological advances put more and more time between early school life and the young person's final access to specialized work, the stage of ______ becomes an even more marked and conscious period.A.adolescenceB.adjacencyC.advantageD.adventure 查看答案