一辆汽车在平直的公路上做直线运动,其v﹣t图象如图所示,汽车在第10s时已行驶了150m,速度达到了20m/s,随后匀速前进,若汽车在行驶过程中所受阻力大小始终为2000N,以下说法正确的是()
Onaverageabout£5000ayearisspentoneachprivateschoolpupil,_______theamountspentonstateschoolpupils.
______thenewplancanbecarriedoutwillbediscussedatthemeetingtomorrow.
In1985,_______becamethefirstinternationalhotelcompanytoopenahotelinChinabearingitsownname.
Astothevariouspollutions,whichofthefollowingisNOTtrue?