诊断再障的必备条件为
A.全血细胞减少
B.网织红细胞绝对值<15×109/L
C.骨髓有核细胞增生低下
D.骨髓非造血细胞增多
E.骨髓巨核细胞数量明显减少
参考答案:E
什么是爆腰?产生爆腰的因素有哪些?产生爆腰的后果是什么?
The high chimney in the factory was in such a bad ______ that it suddenly _____. [ ]
A. state; fell apart
B. situation; burst out
C. condition; fell away
D. shape; burst in