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乳中微生物的来源及控制:乳中微生物从挤乳、收乳到加工的每一个过程都发生变化,主要原因系受外界微生物的污染。污染途径如下:【 】A.
乳房
B.
C.
空气
D.
挤乳用具和乳桶等
E.
其他
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【单选题】Man, this guitar ______has gone on for five minutes...will he ever stop?
A.
solo
B.
ethnic
C.
tissue
D.
ample
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