64.刷牙時合併使用牙膏,能有效清除牙菌斑的最主要因素為下列何者?
(A)detergent or surfactant
(B)emulsifying agent : sodium lauryl sulfate
(C)abrasive : silica , calcium carbonate
(D)function of access of brush filaments
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統計: A(81), B(75), C(283), D(659), E(0) #2042021
統計: A(81), B(75), C(283), D(659), E(0) #2042021