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句型转换。 1. He was very tired,but he worked late into the night. _______ ________ ________ ________,he worked late into the night. 2.If I were you,I would buy that car. _______ __________ ________,I would buy that car. 3. He can speak not only Chinese,but also Japanese. _____ ______ _____ he speak Chinese,but also Japanese. 4. I have never been to Beijing. He hasn't been there,either. I have never been to Beijing. ______ _______ ________. 5. He made such great progress that he was praised. _______ ________ _________ ________he make that he was praised. 6.I didn't go to bed until 11: 30 last night. ________ ________11: 30________I go to bed last night. 7. It began to rain as soon as I got home. ______ _______ _______I got home________it began to rain. 8. You can solve the problem only in this way. Only in this way _______ _________ _________ the problem. 9. A temple lies north of the city. North of the city _________ ____________ ___________. 10. You can ride a motor bike well. I can ride it well too. You can ride a motor bike well.________ _________ ________.
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【判断题】变形速度就是工具的运动速度。
A.
正确
B.
错误
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【单选题】心性水肿是由下列哪种病变引起?
A.
左心衰竭
B.
右心衰竭
C.
C  高血压
D.
D  心肌梗死 、心绞痛
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【简答题】40 条发明创造原理 -NO.20 有效作用的连续性原理 1) 不停顿地工作,物体的所有部件都应满负荷地工作。 2) 消除运动过程中的中间间歇。 3) 用旋转运动代替往复运动。 例:火车车轮必须有一个特殊的形状,以实现和铁轨理想的接触。然而,随着使用时问的延长,磨损使火车的车轮会逐渐变形。这种磨损变形达到一定程度就会使火车的运输效率降低,所以要经常把轮子卸下来修复、调整其外形。一种不需要卸下轮子,...
【单选题】牵引变电所是电气化铁路供电系统中的心脏,无论一般线路还是高速线路都要求它具有高度的()。
A.
可靠性
B.
经济型
C.
稳定性
D.
通用性
【简答题】高速铁路牵引供电系统是高速铁路_________的重要组成部分,是高速铁路列车_________的重要组成部分。
【判断题】高速铁路供电系统是牵引供电和电力配电两电合一的系统。
A.
正确
B.
错误
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A.
马克思
B.
亚当·斯密
C.
威廉·佩第
D.
大卫·李嘉图
【单选题】我国高速铁路牵引供电系统的电源电压等级是( )KV。
A.
110
B.
220
C.
330
D.
35
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