SZL20-2.5/400-H表示这是()。
A. 工作压力为2.5MPa,出口水温度为400℃的热水锅炉
B. 工作压力为2.5MPa,额定功率为20MW的热水锅炉
C. 工作压力为2.5MPa,过热蒸汽温度为400℃的蒸汽锅炉
D. 工作压力为2.5MPa,饱和蒸汽温度为400℃的蒸汽锅炉
A:Philosophers should have a full-time profession
B:Philosophy is about arguing over truth
C:Philosophy is about truth that you cannot know through the senses
D:Philosophy is essentially an art form
A: n,l
B:n,l,m
C:n,l,m,ms
D:只需n