在一幅地图上量得甲、乙两地相距2厘米,两地实际距离100千米,这幅地图的比例尺是( )
A:1:40 000
B:1:50 000
C:1:4000 000
D:1:5 000 000
澳门的支柱产业是( )
Many people took hours ____(get) home yesterday because of the rainstorm.
探究弹力和弹簧伸长的关系时,在弹性限度内,悬挂15N重物时,弹簧长度为0.16m;悬挂20N重物时,弹簧长度为0.18m,则弹簧的原长L原为____m,劲度系数k为____N/m.
Please wait a moment. I am on the way to _______.