一台电焊机工作半小时消耗了1.5kWh的电能,这台电焊机的电功率为______W.
P=Wt=1.5kW?h0.5h= 3kW=3000W
故答案为:3000
急性肾衰竭最常见的电解质紊乱是()
A.高钠血症
B.低钠血症
C.高钾血症
D.低钾血症
E.高钙血症
Due to bad weather we have to put ___ off until next week to go camping in the mountains.
A.it
B.that
C.one
D.this