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【单选题】
四冲程发动机曲轴与凸轮轴之间的传动比为（ ）。A.
2:1
B.
1:2
C.
1:l
D.
4:1
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反馈参考答案：
举一反三
【单选题】下列各项中,作品、文体、作者及出处对应错误的一项是
A.
《沁园春 ·长沙》——诗歌——毛泽东——《毛泽东诗词选》
B.
《长江三峡》 ——散文——刘白羽——《长江三日》
C.
《伯格曼法则在北极》 ——说明文——位梦华——《小记十篇》
D.
《假如生活欺骗了你》 ——诗歌——普希金——《普希金诗集》
【单选题】Why Andy feel that he and his wife are not really welcome.
A.
Because his Chinese friends snub his wife.
B.
Because his wife is not included in the invitation.
C.
Because he is not invited.
D.
Because the Chinese are mean.
【简答题】A．If he and his wife are interested in the business of the company. B．The conditions of the car. C．The couple's driving experience all their life. D．Both B and C
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