【判断题】水轮机随着机组负荷的变化而相应地改变导叶开度,使机组转速恢复并保持为额定值或某一预定值的过程称为水轮机调节。()
【简答题】John forgot to ________( specif ic) the place where we should meet.
【单选题】There is still a ___________ doubt among them as to the practical value of the building. [ ]
【判断题】水轮机随着机组负荷的变化而相应地改变导叶开度,使机组转速恢复并保持为额定值或某一预定值的过程称为水轮机调节。