题目内容
(请给出正确答案)
提问人:网友pangli
发布时间:2022-01-07
[主观题]
How to control the rotor rotation speed and rotation direction of DC motor?
A、H Bridge
B、slip ratio
C、phase number
D、Pulse Width Modulation
简答题官方参考答案
(由简答题聘请的专业题库老师提供的解答)
查看官方参考答案
A、H Bridge
B、slip ratio
C、phase number
D、Pulse Width Modulation
— If he _____, he _____ that poisonous food. — Luckily he came back to life immediately. |
[ ] |
A. was warned; would not take B. had been warned; would not have taken C. would be warned; had not taken D. would have been warned; had not taken |
A、frequency of pulse
B、number of pulse
C、number of phase
D、number of rotor teeth
A、AD
B、DA
C、AM
D、MD
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