【单选题】采用星三角降压起动方式可以明显降低起动电流,此时起动电流是全压起动的()
【单选题】---- Sorry, Daddy, I am not getting on well with my studies. -----Well, If only you _______ so much time playing online games?
【单选题】--- Sorry, Daddy. I am not getting on well with my studies. --- Well._________You hadn’t wasted so much time playing online games.
【单选题】采用星三角降压起动方式可以明显降低起动电流,此时起动电流是全压起动的()
【单选题】一种碳纳米管能够吸附氢气,用这种材料制备的二次电池原理如下图所示,该电池电解质为6 mol·L -1 KOH溶液,下列说法中正确的是( )
B.
放电时电池负极的电极反应为:H 2 -2e - =2H +
C.
放电时电池正极的电极反应为:NiO(OH)+H 2 O+e - =Ni(OH) 2 +OH -
【单选题】一种碳纳米管能够吸附氢气,用这种材料制备的二次电池原理如图所示,该电池的电解质为6 mol/L KOH溶液,下列说法中正确的是 [ ]
B.
放电时电池负极的电极反应为:H 2 -2e - =2H +
C.
放电时电池正极的电极反应为:NiO(OH)+H 2 O+e - =Ni(OH) 2 +OH -
【单选题】《“一带一路”贸易合作大数据报告(2017)》显示,2017年中国与“一带一路”沿线国家贸易总额达到万亿美元,进一步推动了沿线国家经济发展。可见“一带一路”建设:
【单选题】— Sorry, Daddy. I am not getting on well with my studies. — Well, _______ you hadn't wasted so much time playing online games.
【单选题】国家信息中心“一带一路”大数据中心发布的《“一带一路”贸易合作大数据报告(2017)》显示,在“一带一路”贸易中,( )也是主力军,出口额占比始终保持最高且逐年上升。
【单选题】— Sorry, Daddy. I am not getting on well with my studies. — Well. _____ you hadn't wasted so much time playing online games. [ ]