(7.89+4.62)×15=( ____ )×15+4.62×( ____ )
关于曲线运动,下列说法中正确的是( )
国家测绘局最近对明长城进行了测绘,工作时测绘员以0.5米/秒的速度沿直线做匀速运动,1min内通过的距离为____ 米。烈日下测绘器材表面温度会升高,其内能的变化是通过____ 方式实现的.
如图所示,放在M、N两水平桌面上的P、Q两物体,分别在FP=5N、FQ=3N的水平拉力作用下做匀速直线运动,可以确定( )
⑴ ____
⑵ ____
⑶ ____
⑷ ____
⑸ ____
A. The boy is going to the park.
B. Some newspapers are flying away.
C. The balloons are flying away.
D. These boys are playing football.
E. They are going to go to the park tomorrow.