问题
问答题 简答题
电动机的制动：
答案
参考答案：
①机械制动：内、外机械制动
②电气制动：反接制动、能耗制动、电容制动、回馈制动
搜题请搜索小程序“爱下问搜题”
电动机的制动：
参考答案：
①机械制动：内、外机械制动
②电气制动：反接制动、能耗制动、电容制动、回馈制动
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| Mr Newton was a famous scientist. He liked thinking of some 1 and for it he was often absent-minded (心不在焉的).One evening, when he 2 home at eight o'clock, his family were out. He waited for a long time, but none 3 .He became so worried about them that he couldn't eat. He wanted to eat nothing at all. Then he 4 his wife always took the children to the park on Wednesday and after that she would take them to the 5 .And it was Wednesday that day. Mr Newton was no longer worried. He began to feel 6 . He ate some bread, meat and tomatoes. After supper he fell 7 in the chair. Later on a little noise woke him up. He 8 that someone had entered the house. They slipped into(潜入)the sitting room, 9 turning on the lights. Jumping off the chair, he thought," 10 " Then he heard, "What are you doing here, Daddy?" Now he understood: they were his children. | ||||
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