真菌中最缺乏的维生素为(),其活性形式为()。
参考答案:硫胺素;焦磷酸硫胺素(TPP)
—How many students are there in your school?
—______ students, I think.[ ]
A. Thousand of
B. Three thousands
C. Two thousand
简述污泥处置的目标。