单项选择题
A.Au<0.0005g/l、Ag<0.003g/l、Se≤0.1g/l、Te≤0.1g/lB.Au≤0.0005g/l、Ag≤0.003g/l、Se<0.1g/l、Te<0.1g/lC.Au≤0.0005g/l、Ag≤0.003g/l、Se≤0.1g/l、Te≤0.1g/lD.Au<0.0005g/l、Ag<0.003g/l、Se<0.1g/l、Te<0.1g/l
A.1mB.2mC.1.5mD.1.6m
A.60—80℃B.65一75℃C.60一75℃D.65一80℃