(Continued) X1 is identical to the ____________ in the original system.
举一反三
- Closed-loop control system is an automatic control system. Open-loop control system is not an automatic control system.
- Phase lag compensation can reduce the cut-off frequency of the system after compensation by means of_____ in the intermediate and high-frequency band of the original system, so as to obtain sufficient phase margin with the help of the phase at this frequency of the original system. A: magnitude attenuation B: phase lag C: magnitude increase D: magnitude unchanged
- Which of the following is not the basic system of language?? The grammar system.|The word system.|The sound system.|Alphabet system.
- A computer system consists of hardware system and software system.
- Althoughtheyare______twins,LindaandBetharedifferentinsomeways. A: alike B: same C: identical D: original