用于红细胞生成减少所致贫血的检查有()
A.高铁血红蛋白还原试验
B.血清铁检测
C.血清铁蛋白测定
D.血浆维生素B12检测
E.红细胞G-6-PD活性测定
参考答案:B, C, D
句型转换。
1. He breaks his tail. (改为一般疑问句)
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2. My mother often goes to work by bus. (对划线部分提问)
3. My mother is a teacher. (对划线部分提问)
4. Can you take a picture? (否定回答)
5. I would like some eggs. (改为一般疑问句)
为什么在酸碱滴定时常用强酸或强碱作滴定剂?