甲比乙多30%,乙比甲就少30%.______.
30%÷(1+30%)
=30%÷130%,
≈23%.
即乙数就比甲数少约23%.
故答案为:×.
Demurrage charges()from $ 5 to $ 50 per day across countries.
A.range
B.altered
C.separated
D.differed
计算题:有一三相异步电动机Y接线,在该额定负载下运行,等效电阻为8Ω,等效电抗为6Ω,试求该电机电流和功率因数(Ue=380V)