在中间站停运列车上的货车,必须统计中转停留时间。
参考答案:对
如图所示的圆锥摆,摆线与竖直方向的夹角为θ,悬点O到圆轨道平面的高度为h,下列说法正确的是( )
A.摆球质量越大,则h越大
B.角速度ω越大,则摆角θ也越大
C.角速度ω越大,则h也越大
D.摆球周期与质量无关
I wonder how he could ______ not handing in his math exercises yesterday, for his math teacher is always strict with his students.
A.get along with
B.get away with
C.get down to
D.get around