皮皮学，免费搜题
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【单选题】
直流电动机( )、价格贵、制造麻烦、维护困难,但启动性能好、调速范围大。A.
结构庞大
B.
结构小巧
C.
结构简单
D.
结构复杂
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】肖雪在日记中写道:“走进大学,我们接触到了更多的同学、老师,参加了更多的课外活动,学到了更多的知识,视野更加开阔......那些快乐的日子,使我感受到了新生活的美好。”肖雪这段话表明 ( )
A.
人们离开了集体生活,便不能生存
B.
集体生活是知识的源泉
C.
人们只有融入到公共生活中,才能体验到更加快乐的人生
D.
离开了公共生活,便没有人生快乐
【单选题】To analyze a value motion, what should be done first?
A.
To set the context.
B.
To define the motion .
C.
To provide evidence.
D.
To set standards.
【单选题】What does the lecturer advise debaters to do to better analyze the context of a motion?
A.
To research on the background of the motion.
B.
To ask relevant questions.
C.
To determine the motion type.
D.
To explain difficult terms.
【单选题】Pitching is angular motion of the vessel about what axis(轴)?
A.
Longitudinal
B.
Transverse
C.
Vertical
D.
Centerline
【单选题】Pitching is angular motion of the vessel about what axis ().
A.
Longitudinal
B.
Transverse
C.
Vertical
D.
Centerline
【简答题】What type of motion can be transmitted by hydraulic actuators?A. linear motion B. rotary motion C. both A. and B. D. none of the above
【单选题】听力原文：What is the acceleration? (15)
A.
A kind of motion.
B.
A steady speed.
C.
The motion of a plane.
D.
An increase in speed.
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