患者,男,42岁,(来学网)缺失,设计基牙,锤造固定桥修复。固位体和桥架用焊料焊接起来
  1. 镍铬合金锤造固定桥焊接常用焊料是
    A.
    (来学网)金焊
    B.
    (来学网)银焊
    C.
    (来学网)铜焊
    D.
    (来学网)锡焊
    E.
    (来学网)锌焊
  2. 锤造固定桥的焊接各焊件之间的缝隙为
    A.
    (来学网)0.010~0.015mm
    B.
    (来学网)0.010~0.020mm
    C.
    (来学网)0.021~0.025mm
    D.
    (来学网)0.10~0.15mm
    E.
    (来学网)0.16~0.20mm
  3. 镍铬合金锤造固定桥焊料焊接时最常用的热源是
    A.
    (来学网)煤气+氧气吹管火焰
    B.
    (来学网)汽油+压缩空气吹管火焰
    C.
    (来学网)激光束
    D.
    (来学网)微束等离子弧
    E.
    (来学网)氩弧