再生障碍性贫血( )
A．大细胞正色素贫B．正细胞正色素贫血C．小细胞低色素贫血D．小细胞正色素贫E．大细胞低色素贫血
参考答案：B
I don't know when ____ famous. [ ]
A. does he become
B. he becomes
C. did he become
采用直接浇口的单型腔模具，适用于成型（）塑件，不宜用来成型（）的塑件。
