电液比例先导控制系统：该控制一般由三个部分组成：（）。 A.电比例先导操纵阀 B.电 发布时间：2018-09-23 11:07 │ 来源：www.tikuol.com 题型：多项选择题 问题： 电液比例先导控制系统：该控制一般由三个部分组成：（）。A.电比例先导操纵阀B.电子放大器C.电液比例阀D.电流镇定器
题型：多项选择题 阅读下列短文，然后在每小题的A、B、C、D四个选项中选出最佳选项。 The 2008 Beijing Olympic Games are drawing near. Are you looking forward to watching the matches? If so, here are some suggestions you need to know about audience manners. Most sporting arenas (赛场) have rules for audience which are written on the back of the tickets. Readyour ticket carefully before you arrive. Try to reach your seat half an hour before the start of the event and don'twalk about when a game is being held. When you leave, remember to take away your soft drink bottles and otherrubbish. During exciting games, try to control yourself. Don't criticize (批评) the performance of players and coaches. Be careful with your words, since some may cause anger among other people in the audience. Applause is a special form of body language you can use to communicate (交流) with players. But you should do it properly. When players first appear, clap your hands together to welcome them; don't go on for too long. After an excellent performance, applaud (鼓掌) warmly. Applause is not welcome, however, while a game is being held and the players need to focus all theirattention. Different sports have different rules for the audience. Enjoying artistic gymnastics (艺术体操) requiressilence. But lots of cheering can really help basketball and football players. Using flash (闪光灯) to take photos isquite disturbing to tennis players. Mobile phones can not be used in shooting centers. To be a good spectator (观众), you should take time to learn the game — related rules and audience manners of each event. 1. According to the writer, it's good manners to __________.[ ]A. applaud for the excellent performance of players properly B. complain about the bad performance of players from time to timeC. arrive at the sporting arenas just before the start of the eventD. walk here and there when a game is being held 2. According to the passage, in which of the following events CAN'T we use flash to take photos?[ ]A. Artistic gymnastics. B. Basketball. C. Football. D. Tennis. 3. What is the best title of this passage?[ ]A. How to Applaud for Players. B. How to Be a Good Spectator. C. How to Remember Audience Manners. D. How to Communicate with Players. 查看答案
题型：多项选择题 《后汉书》记载，明帝幸辟雍（太学），初行养老礼。以李躬为三老，桓荣为五更。礼毕，引桓荣及弟子升堂。上自为辩说，诸儒执经问难于前，冠带捂绅之人，圜桥门而观听者，盖亿万计。这种现象A．标志着儒学正统地位的确立B．扼制了学术思想的自由发展C．反映了汉代选官制度的改变D．促进了社会好学风气的形成 查看答案