M: I really love the beach when the sand is soft and the water doesn&39;t make waves.
W: But I prefer an angry sea.That makes me excited and energetic.
The women likes___________ .
A.the beach
B.a stormy ocean
C.calm water
D.the sand
A.车轮前束角过大或车轮外倾角过小
B.车轮前束角过小或车轮外倾角过大
C.主销后倾角或主销倾角变化
D.车轮前束过大或车轮外倾角过大
车轮上装置一质量为m的物块B,于某瞬时(t=0)车轮由水平路面进入曲线路面,并继续以等速v行驶。该曲线路面按的规律起伏,坐标原点和坐标系O1x1y1的位置如图所示。设弹簧的刚度系数为k。求:(1)物块B的受迫运动方程;(2)轮A的临界速度。
A.3/4
B.1/4
C.1/3
D.2/3
A.fluid
B.guideline
C.boom
D.stability