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【单选题】
某材料自甲、乙两地采购，甲地采购量为400t，原价为180元／t，运杂费为30元／t；地采购量为300t，原价为200元／t，运杂费为28元／t，改材料运输损耗率和采购保管费分别为1％、2％，则该材料的基价为( )元／t。A.
223．37
B.
223．40
C.
224．24
D.
224．28
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