【简答题】A.Einstein had no other interests besides science. B.Germans usually have a high respect for science. C.Einstein was forced to serve in the German army. D.Einstein's reputation was ruined because of h...
【单选题】【2016年下半年中学真题】康老师经常在班上开展“成语知识竞赛”“演讲赛”“辩论赛”等活动,营造运用语文知识的情境。康老师的做法有利于( )
【判断题】Germans usually embrace, but kissing is rarer than in France or Latin culture.
【单选题】进行形状剪除时,应该先选择的形状是( )
【多选题】制动器保养检查的要点有
A.
制动器在动力电源或控制电源失电时应立即自行制动
B.
切断制动器的电流至少应由两个独立的电气装置来实现
D.
制动器应进 行必要的润滑, 可以用润滑油脂进 行润滑
【多选题】制动器动作状态监测装置的检查要点
A.
使用毛刷等清洁制动器上的检测开关,应无积尘、油污、杂物,必要时用细砂纸清洁开关电气触点,然后棉纱、百洁布沾酒精清洁触点表面。
C.
开关触点动作灵敏,接触良好,线路无破损老化。如果有一组制动器机械部件不起作用,则曳引机应当停止运转或不能启动。
D.
动器动作后,检查开关处于压缩状态时,仍应有一定的活动余量,如不符合要求,按制造单位维护保养说明书的要求及方法调整开关动作间隙。
【多选题】制动器保养检查的要点有( )。
A.
制动器在动力电源或控制电源失电时应立即自行制动;
B.
切断制动器的电流至少应由两个独立的电气装置来实现;
C.
制动器动作应灵活,开闸间隙应均匀;工作可靠;
D.
制动器应进行必要的润滑,可以用润滑脂进行润滑;
【单选题】People with anorexia nervosa are usually very thin.
【简答题】Pudong New Area is part of the city of Shanghai. It is located on the eastern side of Huangpu River, which cuts through the city. Pudong has a laud area of 533.@44 square kilometers and a permanent po...