65.關於 type II 包埋粉的吸水性膨脹(hygroscopic expansion),其範圍為下列何者?
(A)0.5~0.8%
(B)1.2~2.2%
(C)3.0~3.5%
(D)4.0~4.3%

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統計: A(0), B(6), C(3), D(1), E(0) #3974624