B、<img width="36" height="39" src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/160af483-c949-4b6a-be77-853cc4ea4ebc.png" /><img width="14" height="18" src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/4c5710b6-d2e2-48f6-b5f6-fb68096983df.jpg" />
C、<img width="34" height="36" src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/89051777-8309-4601-8fc4-4e93514a58dc.png" /><img width="13" height="16" src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/c7b962ca-16a0-4b48-b4f2-3329bdf16c6c.jpg" />
D、ω<sub>0</sub>
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r。当曲柄OA与连杆AB位于同一铅垂线上时，OA⊥0C，此时连杆AB的角速度为（ ）。
题53图