8 . 王水是由下列何種試劑配製 (1) HNO3, HCl (2)H2SO4 , HCl (3) H2SO4 , HNO3 (4) HNO3, HClO4
(A)3
(B)2
(C)4
(D)1

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統計: A(6), B(6), C(1), D(23), E(0) #283757