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【单选题】
由运动结构简图可知,该传动系统是 prefix="v" ns="urn:schemas-microsoft-com:vml" prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace> ?xml:namespace>A.
行星轮系
B.
混合轮系
C.
轮系
D.
周转轮系
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举一反三
【简答题】We are enthusiastic teachers who promote the be______ of education and are devoted to the education reform.
【单选题】What is the attitude of the author to the education?
A.
Education is necessary but not crucial.
B.
Higher education isn't equal to the higher income.
C.
Education works not so well as technique.
D.
A Ph.D.can only work in schools or colleges.
【单选题】The comparison between distance education and traditional face-to-face education indicates that ______.
A.
traditional education has been out of date
B.
distance education has more advantages than traditional education
C.
distance education can be as effective as traditional education
D.
distance education has replaced traditional education
【单选题】《全国青少年网络文明公约》包括 ( ) 1 要善于网上学习,不浏览不良信息 2要诚实友好交流,不侮辱欺诈他人 3要增强自护意识,不随意约会网友 4要维护网络安全,不破坏网络秩序 5要有益身心健康,不沉溺虚拟时空
A.
①②④
B.
①③④⑤
C.
①②③⑤
D.
①②③④⑤
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