下列哪种疾病外周血涂片不会出现幼稚细胞
A.再生障碍性贫血
B.急性出血
C.淋巴瘤晚期
D.溶血性贫血
E.急性白血病
参考答案:A
The survey shows that speed___ at least 30% percent of road traffic deaths.
A.results in
B.results from
C.lies in
D.suffers from
阴离子聚合为活性聚合,主要是由于()
A、用于阴离子聚合的单体活性高
B、引发剂活性高
C、活性链难终止
D、活性链易终止