钙、镁离子测定的参考方法是()
A.火焰光度法
B.邻甲酚酞络合铜法
C.过锰酸钾滴定法
D.原子吸收分光光度法
E.EDTA络合滴定法
参考答案:D
Sorry, I’ve ________ you. I thought you were finding _____ with me.
A.mistaken; fault
B.mistook; error
C.faulted; mistake
D.mistake; wrong
按DOCSIS标准实现有线电视网络的双向化,对其接入网的要求较高,且带宽提升单价较高。