单项选择题
A.生料栽培B.熟料栽培C.培养料栽培D.代料栽培
A.5-10m2B.4-7m2C.4-8m2D.5-8m2
A.5minB.8minC.6minD.2min
A.37%-40%B.28%-30%C.48%-55%D.58%-60%
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