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问题
单项选择题
最有助于贫血原因的初步确定的是（）
A.血清铁代谢检查
B.各种溶血检查
C.骨髓细胞检查
D.骨髓涂片检查
E.染色体检查
答案
参考答案：
D
选择题
— Why was the factory closed?
— The workers have put down their tools and are refusing to work overtime unless they _____ extra for it.
A. will be paid
B. are paid
C. pay
D. are being paid
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问答题 简答题
光电管和光电倍增管的工作原理和基本功能？
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