【判断题】跳远起跳的作用是在尽量保持水平速度的同时获得垂直速度。
【多选题】采用全液压传动的场车,其传动系统一般由以下哪些部件组成?( )
【简答题】设 a>b,给出下列结论: ① ; ② ; ③ ; ④ 。其中正确结论的序号是 .
【单选题】— ______________ — It's red. [ ]
【简答题】Coketown was a town of red brick, or of brick that would have been red if the smoke and ashes had allowed it; but in fact it was a town of unnatural red and black like the painted face of savage(野人). ...
【简答题】The taxi had to ____ because the traffic light had turned red. A.set up B.catch up C.shut up D.pull up