卫星地球站天线安装时,当环境温度低于摄氏-20度时,不得对构件进行锤击、剪切和冲孔; 发布时间:2019-01-09 00:04 │ 来源:www.tikuol.com 题型:单项选择题 问题: 卫星地球站天线安装时,当环境温度低于摄氏-20度时,不得对构件进行锤击、剪切和冲孔;当环境温度低于摄氏()度时,不得对钢塔构件进行冷矫正。A.-10 B.-12 C.-16 D.-20
题型:单项选择题 Your cold’s worse, Ann.Go back to bed and I ____ the school to tell them you can’t come.A.have rungB.ringC.will ringD.rang 查看答案