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【判断题】
电流(或电压,电动势)的大小和方向随时间而变化的叫做交流电,随时间按正弦规律变化的叫正弦交流电。不按正弦规律变化的叫非正弦交流电。
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】Which of the following etiquette is considered not appropriate in British society?
A.
You need to stand up until the host or hostess invites you to sit down.
B.
You always need to pay for meals at restaurants no matter whether or not you are invited.
C.
You should not rest your elbows or hands on the table while being invited for dinner.
D.
You can arrive 10-15 minutes later than the time as suggested by the host or hostess.
【单选题】当开关闭合瞬间,判断三相异步电动机的首尾端的现象如图所示,则同为首端或尾端的是( )
A.
1、3、5
B.
1、3、6
C.
1、4、5
D.
1、4、6
【简答题】Etiquette to society is what apparel is to the individual. Without apparel men would go in shameful nudity which would surely lead to the corruption morals; and without etiquette society would be in a...
【单选题】一般情况下,发展中国家的死亡率下降的主要原因有:
A.
交通运输设施和网络的发展
B.
商品供应量的增加
C.
食物数量和种类的增加
D.
以上都是
【多选题】What is the classification of exhibition service etiquette?
A.
Public occasion communication service etiquette
B.
Reception etiquette
C.
Conversational etiquette
D.
Daily communication etiquette
【简答题】判别三相异步电动机定子绕组首尾端的两种方法是什么?
【简答题】Text A The Importance of Etiquette Etiquette is a set of practices and forms which are followed in a wide variety of situations; many people consider it to be a branch of decorum , or general social b...
【单选题】Why is etiquette important in today’s society?
A.
It protects the feelings of others.
B.
It makes communication clearer.
C.
It makes good first impressions.
D.
All of the three.
【单选题】What is "etiquette"?
A.
Etiquette is the way others decide you should behave in the workplace.
B.
Etiquette is standards, that are determined by each individual to demonstrate their values.
C.
Etiquette is the standards, or guidelines, that determine what constitutes good manners and professional behavior in the workplace.
D.
Etiquette represents cultural norms.
【单选题】用万用表的( )档可判别三相异步电动机定子绕组的首尾端。
A.
电压档
B.
电阻档
C.
安培档
D.
毫安档或微安档
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