How long is the accident non-intervention time of passive safety technology?
A. 30 hours
B. 12 hours
C. 24 hours
D. 72 hours
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稳态流动是指流体流动过程中,各项参数______ 时间变化的流动;稳定流动是指当系统受到一个微小的扰动后,不至于偏离原来的状态,系统可以回复到初始的稳定状态
The coolant flow through the core is generally greater than the coolant flow provided by the main pump, which is due to the existence of ()
A. Recirculation pump
B. Condensate pump
C. Steam turbine
D. Feedwater heater
One main difference between pressurized water reactor and boiling water reactor nuclear power plant is that there is no ()
A. Steam generator
B. Reactor core
Containment
D. Moderator
Both the high-pressure water injection system and the low-pressure water injection system in the emergency core cooling system use (), while the core isolation cooling system uses ()
A. Electric pump
B. Pneumatic pump
C. No pump