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【多选题】
物质形态的稳定与下列哪些因素因素有
A.
重心
B.
底部面积
C.
材料
D.
数量
E.
色彩
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参考答案:
举一反三
【判断题】欧文是世界上第一个系统研究儿童游戏,并把游戏作为幼儿园基础教育的教育家。
A.
正确
B.
错误
【单选题】世界上第一个系统研究儿童游戏,并把游戏作为幼儿园教育基础的人是
A.
弗洛伊德
B.
柏拉图
C.
福禄培尔
D.
欧文
【单选题】对( )的场所应采用密闭一抽风—除尘的方法来消除和降低粉尘危害。
A.
手工生产
B.
流程紊乱
C.
不能采取干法生产
D.
不能采取湿式作业
【单选题】下列属于半双工通信方式是( )。
A.
收音机
B.
对讲机
C.
计算机
D.
以上都不是
【简答题】Walt Disney,the great film-maker was born in Chicago in 1901.  His greatest wish was to be a famous __ _1___ .  When he was young, he went to a _ _2__ _ office in a city named Kansas.  There he had so...
【单选题】听力原文: Requesting someone's business card is a straightforward process. You need only say, 'Do you have a business ca/d?' or' May I have you business card?' When you want to present your own card, you ...
A.
Requesting one's business card directly.
B.
Accepting one's card but not continuing contract with him.
C.
Putting one's business card in the card file.
D.
Refusing a request for your business card directly.
【简答题】完形填空。 It was at a concert that I happened to find David. He was holding his head at a strange 1 as if he were staring down at something. Then the truth struck me. He was blind. The last thing he remem...
【多选题】随机接入的过程分为哪几种?(    )
A.
基于混合竞争的随机接入
B.
基于竞争的随机接入
C.
基于非竞争的随机接入
D.
基于公平竞争的随机接入
【简答题】阅读理解。 I was very disappointed not to be able to go to the jazz concert last Friday. The announcement in the paper said that you could buy tickets at the theater box office in Richland Hills any day be...
【单选题】下列属于半双工通信方式是()
A.
电话
B.
遥控
C.
传真
D.
广播
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