试题与答案

并励直流电动机采用反接制动时,经常是将正在电动运行的电动机电枢绕组反接。

题型:判断题

题目:

并励直流电动机采用反接制动时,经常是将正在电动运行的电动机电枢绕组反接。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:[详解] 本题考查对文中重要词语的含义的理解。文中第五段有“在哥伦布的船队到达美洲之前,那片大陆就自然地存在着,后来者占有了‘发现’的专利权。‘从此以后,印第安人就一...

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