55.下列何者為常用之銲接抗熔劑(soldering antiflux)?
(A)硼酸(boric acid)
(B)硫化物(sulfide)
(C)石墨(graphite)
(D)氧化鎂(magnesium oxide)
答案:登入後查看
統計: A(166), B(18), C(542), D(61), E(0) #1741984
統計: A(166), B(18), C(542), D(61), E(0) #1741984