A.0
B.1
C.2
D.不存在
[单选题]A.52.6°~53.2°B.-52.6°~-53.2°C.+52.6°~+53.2°D.+55.0°E.+52.75°±1°
[单选题]A.B.C.D.
[单选题]A.小细胞高色素性贫血B.正常细胞性贫血C.大细胞性贫血D.小细胞低色素性贫血E.单纯小细胞性贫血
[判断题]A.对B.错
[单选题]A.0B.1/2C.1D.3/2
[单选题]A.1/2B.2C.1/4D.1