34.調整alginate印模材的flexibility為soft-set或hard-set是以改變何種成份的含量而定?
(A)Organic glycols
(B)Diatomaceous earth or silicate powder
(C)Sodium phosphates
(D)Calcium sulfate dihydrate
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統計: A(66), B(677), C(296), D(122), E(0) #1034860
統計: A(66), B(677), C(296), D(122), E(0) #1034860