【已刪除】51.圖(十九)
(A)0.3 W
(B)0.2W
(C)0.1W
(D)0.4W
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統計: A(4), B(10), C(6), D(7), E(0) #295980
統計: A(4), B(10), C(6), D(7), E(0) #295980