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【多选题】
异常乳由于成分和性质受到改变,往往不适合用于乳制品加工,以下因素( )的可导致乳牛分泌异常乳。A.
生理
B.
病理
C.
人为添加非乳成分
D.
污染非乳成分
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皮皮学刷刷变学霸
举一反三
【单选题】The study of trees, branches and roots shows that __________.
A.
there were larger amounts of gold in the branches than in the seeds
B.
there were smaller amounts of gold in the roots than in the branches
C.
there were less amounts of gold in the seeds growing on the ends of branches than seeds growing nearest to the tree trunks
D.
there was more gold in the branches than in the roots