被称为现代中国广告业发展“元年”的是()
D
暂无解析
TheUnitedStatesisacountry_(advance)inscienceandtechnology
有两个质点A、B分别做匀速圆周运动,角速度之比为ωA:ωB=1:2,圆周的半径之比为RA:RB=1:3,则它们的法向加速度之比anA:anB=()
Thesadconditionofwomenworkingashouseservantsaroundtheworldreceivedmuchmedia_____earlythisyea
穿过一闭合回路的磁通量随时间的变化关系为m=2t2+t(SI),则t=0时回路中的感应电动势为()
Thegoalofthecourseisto___(rich)ourunderstandingofothercultures.