题型:问答题 简答题 一辆质量是1.2×104kg的汽车在水平路面上由静止开始匀加速行驶,受到的牵引力是7.0×103N,阻力是1.0×103N.这辆汽车运动的加速度是______m/s2,10s末汽车的速度是______m/s. 查看答案
题型:问答题 简答题 Many children, _________ parents are away working in big cities, are taken good care of in the village.A.theirB.whoseC.of whomD.with whom 查看答案