当发电机振荡电流超过允许的耐受能力时,应解列发电机,并保证断路器断开时的电流不超过断路器允许开断电流。
参考答案:对
Which of the following describes the regulatory practice of setting prices at a level where the monopoly firm's average total cost curve intersects the demand curve()
A. Average cost pricing.
B. Marginal cost pricing.
C. Cost-of-service pricing.
为了既缩短工期又获得较好的质量且耗费较低的投资,建设工程进度计划应当制定得既可行又优化,使工程进度( )。
A.尽可能地加快
B.具有可控性
C.具有连续性、均衡性
D.具有可操作性