无人机发展的高级阶段是()A、智能化 B、战斗机 C、隐形化 D、高速化 发布时间:2021-04-01 15:49 │ 来源:www.tikuol.com 题型:单项选择题 问题: 无人机发展的高级阶段是()A、智能化B、战斗机C、隐形化D、高速化
题型:单项选择题 To tell you the truth, if you want to study abroad, you must pay more attention to ______English every day.A.practise speakingB.practising speakingC.practising to speakD.practise to speaking 查看答案
题型:单项选择题 将一个质量很小的金属圆环用细线吊起来,在其附近放一块条形磁铁,磁铁的轴线与圆环在同一个平面内,且通过圆环中心,如图23所示,当圆环中通以顺时针方向的电流时,从上往下看( )A.圆环顺时针转动,靠近磁铁B.圆环顺时针转动,远离磁铁C.圆环逆时针转动,靠近磁铁D.圆环逆时针转动,远离磁铁 查看答案
题型:单项选择题 When he was a young boy, a serious disease deprived him of the()of hearing.A.organB.possessionC.conductD.faculty 查看答案