生产指令的下发要求是什么？
参考答案：
按生产工艺规程以书面文件下达。
下列哪个是大细胞低色素性贫血（）
A.缺铁性贫血
B.铁粒幼细胞性贫血
C.地中海贫血
D.溶血性贫血
E.巨幼细胞贫血
12. The teacher didn't _____ to my questions which were not too difficult for me to think over.
A．answer
B．tell
C．say
D．Reply
