在正反转控制电路中,为防止两个接触器同时通电造成短路而采取的措施是在控制电路上设置()。
参考答案:机械连锁或电气连锁
根据句意和汉语提示写出单词的正确形式。
1. In the afternoon they went to all exhibition of ________ (现代) art.
2. A man from Canada spent a summer in our ________ (村子).
3. Most of them were surprised to hear my ________ (决定).
4. — When did Columbus ________ (发现) America?
— In 1492.
5. Children of all ages should be outdoors ________ (几个) hours a day.
6. People think it is ________ (无礼) to talk loudly in public places.
7. Never ________ (争吵) with your parents or teachers. Be polite to them.
8. The girl felt nervous ________ (尤其) when the teacher asked her questions.
9. I think kids should learn to plan things for ________ (自己).
10. Wang Lin has a ________ (俄罗斯) pen pal, and my pen pal is from Australia.
有关教育心理学的研究成果,搭配恰当的一组是( )
A.桑代克—联结说
B.格式塔—场论
C.勒温—完形说
D.奥苏伯尔—认知发现说