并列运行的电力电缆,敷设时应() A.截面相等 B.长度相等 C.长度不等 D.型号 发布时间:2020-05-08 17:35 │ 来源:www.tikuol.com 题型:单项选择题 问题: 并列运行的电力电缆,敷设时应()A.截面相等B.长度相等C.长度不等D.型号相同
题型:单项选择题 近年来,深圳第三产业的增加值超过制造业,占GDP总量近七成,使深圳的GDP变“轻”了。因为第三产业①消耗的自然资源较少 ②创造的多为无形产品③产品的经济价值较小 ④投入的生产要素较少A.①④B.①②C.③④D.②③ 查看答案
题型:单项选择题 She got so angry that she ran after them. She was soon , but she continued to run. [ ]A. under her breath B. out of breath C. recover her breath D. hold her breath 查看答案