质量m=2kg的质点沿x轴运动,运动方程为x=0.5t2(SI),从t=0s到t=3s过程中,外力对质点做功为()
当前国际上通常使用的衡量经济增长速度的指标是()
Good parents have the ability to communicate messages of love, trust, and self-worth ______their children
如图,弹簧振子在光滑水平面上作简谐振动,当其到达最大位移处时,恰有一泥块从正上方落到振子上,并与振子粘在一起运动,则振子振动的()
价格杠杆在我国宏观调控中的主要功能是()
The black writer wanted the other members of the workshop to treat_________as an equal.
Shanghai is the place _______ I was born.
以促进竞争、抑制垄断为目的的产业政策是()
我国货币流通的中心是()
Finding Harriets house ______ to be more difficult than Nick had expected.