A.外周血紅細(xì)胞計(jì)數(shù)增高 B.外周血紅細(xì)胞計(jì)數(shù)相對(duì)增高 C.外周血紅細(xì)胞計(jì)數(shù)相對(duì)減少 D.外周血紅細(xì)胞計(jì)數(shù)減少 E.外周血紅細(xì)胞計(jì)數(shù)無(wú)變化