A.濃度5%的氨基磺酸銨0.2ml B.濃度10%的氨基磺酸銨0.2ml C.濃度5%的氨基磺酸銨2.0ml D.濃度10%的氨基磺酸銨2.0ml
A.10 B.20 C.15 D.5
A.50ug/L B.50mg/l C.100ug/L D.100mg/L