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【单选题】
听力原文：Q: What columns does The World of English have? A: Well, it has a variety of columns, such as special articles, the literary world, the art circles, social science-economics, history and geography, science and technology, sports, personage, prism, garden of harmonious interest, western pro- files, medicine and health, knowledageabie sketches, selected readings in newspapers and periodicals, culture and education, words and sentences, translation exercises, etc. What columns doesn't The World of English have?A.
The literary world, the art circles, social science-economics.
B.
History and geography, science and technology.
C.
Species and animal knowledgeable sketches.
D.
Selected readings in newspapers and periodicals, culture and education, words and sentences, translation exercises, etc.
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【单选题】滚动轴承按所能承受的载荷方向或公称接触角的不同，分为 、推力轴承。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
向心轴承
B.
组合轴承
C.
调心轴承
D.
非调心轴承
【单选题】滚动轴承按所能承受的载荷方向或公称接触角的不同，分为 、推力轴承。
A.
向心轴承
B.
组合轴承
C.
调心轴承
D.
非调心轴承 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>