如图所示,均质杆AB,质量为M,长为l,A端连接一质量为m的小球,并一起以角速度ω绕O轴转动,则此系统对O轴的动量矩和动能T为()。
A.
B.
C.
D.
参考答案:C
风湿性疾病患者的共同症状是 ()
A.发热
B.多系统损害
C.肌肉关节痛
D.晨僵
E.关节肿胀
I can’t hardly get interested in anything about music,so I don’t ______ jazz.
A.agree with
B.care for
C.keep up with
D.agree with