A.6; B.7,500安匝; C.2.14; D.45,000安匝
A.相同; B.A為B的2倍; C.B為A的4倍; D.B為A的2倍
A.45,000A; B.18,000A; C.需要更多的數(shù)據(jù)才能計算; D.1,125A