共益企业竞争优势的源泉在于其创造就业机会、多元化、公民参与和强大的供应链。 A.错 B.对

标签： 社会创新创业（同济大学）章节测试答案

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  萤石可以作为冶金辅助原料非金属矿产。 A.错 B.对

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  Which statement is wrong about the sounds /i:/ and /?/?（ ） A.The difference in length is the only difference between them. B.The /?/ sound is made by lowering the tongue slightly from the position for /i:/. C.They are produced in the front of the mouth. D./i:/ is much more tense sound than /?/.