2. 0.454686×0.528465=
(A) 0.242856369
(B) 0.2428563699
(C) 0.24028563699
(D) 0.240285643699
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統計: A(15), B(33), C(354), D(121), E(0) #2025867
統計: A(15), B(33), C(354), D(121), E(0) #2025867