【判断题】【消耗次数:1】
对心移动平底从动件盘形凸轮机构中,其压力角始终保持不变。
正确
错误
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相关题目
【判断题】 直动平底从动件盘形凸轮机构工作中,其压力角始终不变。
①  正确
②  错误
【单选题】 在凸轮机构中,决定从动件运动规律的是()
①  凸轮转速
②  凸轮轮廓曲线
③  凸轮形状
④  凸轮位置
【单选题】 对心直动尖顶盘状凸轮机构的推程压力角超过许用值时,可采用的措施是()。
①  增大基圆半径
②  改用滚子推杆
③  改变凸轮转向
④  减小滚子半径
【判断题】 在凸轮机构中,基圆半径取得较大时,其压力角也较大。
①  正确
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【单选题】 凸轮机构中从动件常用的运动规律,有刚性冲击的是( ??)。
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②  等减速运动规律
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①  正确
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【单选题】 凸轮机构的类型可按凸轮的形状和运动以及从动件的形式分类,该说法( )
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【单选题】 凸轮机构中的压力角是指凸轮上接触点的[填空]方向间的夹角
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②  法线与从动件运动
③  切线与从动件运动
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①  正确
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【单选题】 凸轮机构中,若从动件的运动规律是等速运动规律,则该机构将产生()冲击。
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随机题目
【单选题】 A: Thanks a lot. I really enjoyed your company. B: Dont mention it. [填空].
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【单选题】 A: [填空]. Where was I? B: You were talking about your trip to South Africa.
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【单选题】 A: May I use your computer this afternoon? B: Im sorry, but I have to finish typing this term paper today. A: [填空].
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【单选题】 A: Would you rather watch TV or go for a walk? B: The TV program is good today. [填空] A: Cool. Lets go.
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【单选题】 A: Can I take a message? Ill let Mr. Liu know as soon as he comes back. B: [填空].
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【单选题】 A: Whats there to do at night? B: There are clubs, concerts, players and so on. [填空]!
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【单选题】 A: Can I help you? B: [填空]. Where do I pay my fees?
①  Thank you
②  As you please
③  Yes, you can
④  Yes, please
【单选题】 A: Why did your boss shout at you? B: [填空]. He was just in a bad mood.
①  Nothing in particular
②  who knows
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【单选题】 A: I went on a date with Susan last weekend. B: Really? [填空]? A: I couldnt ask for a better night.
①  Is she nice
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