某负载消耗的功率为72kW,功率因数为0.75(电感性,滞后),则其视在功率为()
A.72kVA
B.54kVA
C.96kVA
D.81.6kVA
参考答案:C
动物越高等,学习能力越__________(填“简单”或“复杂”),而且学习能力在动物的全部行为活动中所占的比例越__________(填“大”或“小”)。
I’ll never understand how it __________ that you were late three times a week.
A.came up with
B.came across
C.came about
D.came out