【简答题】AC : alternating current
【单选题】病人,男,58岁。主诉活动后心前区疼痛一个月余。病人平时活动后即出现心前区压迫样疼痛,持续3~5分钟,休息后可以缓解,入院以后治疗6天后出院,遵医继续服用硝苯地平,该药物属于( )
【单选题】Which of the following components are used to convert alternating current produced in the generator windings to direct current?
A.
Armature and equalizer
B.
Commutator and brushes
【简答题】alternating current (AC)
【简答题】Alternating current can be generated by means of the alternating current ______________ (generate).
【单选题】病人, 男, 58岁。主诉活动后心前区疼痛一个月余。病人平时活动后即出现心前 区压迫样疼痛, 持续3~5分钟, 休息后可以缓解, 入院以后治疗6天后出院, 遵医嘱继续服 用硝苯地平, 该药物属于