拔牙一段时间后仍有明显出血称为拔牙后出血,该时间最少为
A.30minB.45minC.60minD.90minE.120min
参考答案:A
单项选择.
—I really hope to keep in touch with Lily.
正常小儿外周血象白细胞分类,粒细胞与淋巴细胞比例相等的年龄为()
A.生后4~6天,4~6岁
B.生后4~6天,4~6周
C.生后4~6周,4~6岁
D.生后4~6天,4~6个月
E.生后4~6个月,4~6岁