司机疲劳后,不能根据()情况,灵活迅速的改变行驶状况躲避障碍物。
A、车辆技术;
B、车型;
C、交通变化、道路;
参考答案:C
如图所示,四个不同倾角的光滑斜面,若使一物体从斜面上端由静止开始下到下端所需时间最短,则斜面倾角应选哪一个( )
A.60°
B.45°
C.30°
D.20°
After a second thought, Jean a better method to deal with the problem.
A.put up with
B.came up with
C.added up to
D.made up for