问答题

若直流电动机两条机械特性硬度相同理想空载转速越低的特性其静差率越转速的相对稳定性就越

答案：答案：大，高。解析：直流电动机的机械特性硬度是指电动机负载变化时转速变化的大小，硬度越大，表示负载变化时转速变化越小...

你可能感兴趣的试题

Mary s to hear on her appearance

答案：答案：Mary is to hear criticism on her appearance. 解析：这个句子的意思是...

mary anything in the shop just now

答案：答案：Mary didn't buy anything in the shop just now. 解析：根据句子的结...