皮皮学,免费搜题
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【单选题】
料石(又称条石)是由( )
A.
花岗岩等质地比较均匀的岩石开采琢制而成的
B.
爆破直接获得的
C.
人工或机械开采出的较规则的六面体石块,略经加工凿琢而成的
D.
乱经加工而成
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A.
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B.
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A.
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B.
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C.
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