三类防雷建筑避雷带网格布置不应大于( )。 A.20m×20m B.24m×16m 发布时间:2017-07-20 18:24 │ 来源:www.tikuol.com 题型:多项选择题 问题: 三类防雷建筑避雷带网格布置不应大于( )。A.20m×20mB.24m×16mC.10m×10mD.12m×8m
题型:多项选择题 I _______ carefully but could _______ nothing. [ ]A. listened, hear B. heard, listen C. listened to, hear D. hear, listen to 查看答案