正常粪便检查不正常的是()。
A.可见红细胞
B.一天两次排便,300~600S/次
C.可见少量肠黏膜上皮细胞
D.黄褐色、柱形
E.不见或偶见白细胞
参考答案:A, B, C
重新排列句子使其成为一段完整的对话。
A. What's your favourite food?
B. Amy, it's time for lunch now.
C. I like tofu, too. But fish is my favourite.
D. Yes. It's 12 o'clock. Let's go to the canteen.
E. I like tofu very much. It's healthy for me.
F. OK. Some tofu and fish, please.
正确的顺序是: B __________________________________
简述低真空保护试验。