单项选择题
A.微量元素B.碳源C.氮源D.凝固作用
A.蛋白胨B.琼脂C.葡萄糖D.马铃薯
A.Botryosphaeria dothideaB.Valsa sordidaC.Sclerotium rolfsiiD.Agrobacterium tumefactions
A.Botryosphaeria dothideaB.Valsa sordidaC.Valsa maliD.Cryptodiaporth populea
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