皮皮学,免费搜题
登录
搜题
【多选题】
图为一皮带传动装置,右轮的半径为r,a是它边缘上的一点,左侧是一轮轴,大轮的半径是4r,小轮的半径为2r,b点在小轮上,到小轮中心的距离为r,c点和d点分别位于小轮和大轮的边缘上,若在传动过程中,皮带不打滑,则( )
A.
a点与b点的线速度大小相等
B.
a点与b点的角速度大小相等
C.
a点与c点的线速度大小相等
D.
a点与d点的向心加速度大小相等
拍照语音搜题,微信中搜索"皮皮学"使用
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】In Paragraph 19, Napoleon Bonaparte I is mentioned to show that ____.
A.
Sunzi’s Art of War was spread to France much early before the Napoleonic Wars
B.
Sunzi’s Art of War was translated into foreign languages
C.
Napoleon missed the opportunity to read Sunzi’s Art of War
D.
Sunzi’s ideas about war were accepted by Napoleon
【简答题】太和殿上垂脊兽由上而下、从左至右,骑鹤仙人之后依次为
【简答题】任何具有两个出线端的部分电路都称为 __ __ ,其中若包含电源则称为 ___ _ 。
【简答题】假设 n 为 2 的乘幂,并且 n>2 ,试求下列算法的时间复杂度及变量 count 的值(以 n 的函数形式表示)。 int Time (int n) { count = 0; x=2; while(x
【单选题】Nicholas Chauvin, a French soldier, aired his veneration of Napoleon Bonaparte so ______ and unceasingly that he became the laughingstock of all people in Europe.
A.
vociferously
B.
patriotically
C.
verbosely
D.
loquaciously
【单选题】听力原文: Napoleon Bonaparte was murdered by arsenic poisoning and did not die naturally of a stomach cancer, according to a new toxicological study which attempts to end long running historical controver...
A.
died of arsenic poisoning
B.
died of a stomach cancer
C.
was killed by British army
D.
was murdered by Prussian forces
【多选题】呼吸三凹征是指吸气时下列哪些部位内陷?( )
A.
胸骨上窝
B.
锁骨上窝
C.
肋间肌
D.
腹上角
E.
肋间隙
【简答题】任何具有两个出线端的部分电路都称为____,其中若包含电源则称 ____ 。
【单选题】三凹征是指上呼吸道部分阻塞时,气流不能顺利进入肺内,所以当吸气时呼吸肌收缩,造成肺内负压极度增高,从而引起下列哪些部位的凹陷?
A.
胸骨上窝、锁骨上窝、肋间隙
B.
胸骨上窝、锁骨上窝、锁骨下窝
C.
锁骨上窝、锁骨下窝、肋间隙
D.
锁骨上窝、肋间隙、腹上角
【简答题】任何具有两个出线端的部分电路都称为(),其中包含电源则称为()
相关题目:
关于我们
免责声明
版本记录
© 2019 pipixue.com 京ICP备20000060号-6