6个月~6岁小儿贫血的诊断标准是()
A.Hb<30~60g/L
B.Hb<120g/L
C.Hb<110g/L
D.Hb90~120g/L
E.Hb145g/L
参考答案:C
is reported in the newspapers, talks between the two countries are making progress.
A.It
B.That
C.As
D.What
通常主光和______的光比决定了被摄对象的影调反差。()
A.修饰光
B.辅助光
C.环境光
D.轮廓光