龙骨表面进行防锈,其双面镀锌量中优等品镀锌量为( )、一等品镀锌量为( )、合格

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问题 龙骨表面进行防锈,其双面镀锌量中优等品镀锌量为( )、一等品镀锌量为( )、合格品的镀锌量为( )。A.120g/cm3,100g/cm3,80g/cm3B.140g/cm3,120g/cm3,80g/cm3C.140g/cm3,120g/cm3,100g/cm3D.120g/cm3,110g/cm3,110g/cm3

选项 A.120g/cm3,100g/cm3,80g/cm3
B.140g/cm3,120g/cm3,80g/cm3
C.140g/cm3,120g/cm3,100g/cm3
D.120g/cm3,110g/cm3,110g/cm3

答案 A

解析
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