过程设计的分类主要有哪些（）
A. Order of Magnitude estimate
B. Project Planning estimate
C. Preliminary Engineering
Detailed Engineering
E. Procurement and Construction
Feed processing methods that can improve the utilization of crude fiber include（）
A. Physical crushing
B. Granulation
Chemical processing
D. Boiling
E. Biological fermentation
The main iron storage organs are（）
A. Bone marrow
B. Liver
C. Pancreas
D. Spleen
E. Heart
Non-starch polysaccharides（NSP）are mainly composed of（）and so on
A. Cellulose
B. Hemicellulose
C. Pectin
D. Resistant starch
E. Lignin
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