慢性粒细胞白血病的主要临床特点是
A.明显贫血、感染与出血
B.起病急骤、明显消瘦
C.早期浅表淋巴结明显肿大
D.肝肿大伴有黄疸
E.低热、乏力、脾脏显著增大
参考答案:E
"Grateful"means ________. [ ]
A. unhappy about something
B. disappointed because of something
C. pleased about something good that has happened,or something bad has not happened
比较非参数统计方法与参数统计方法的区别。