两列波的表达式分别为y1=cos2Avtx(/)和y2=cos2Avtx(/)，两波叠加后在坐标原点x=0处的振幅为()

Criticsshouldbeasobjectiveaspossibleintheir_(analyze)ofliteraryworks

Don’tworry.Thisisthe________(desire)weightrangeforyouhealth

Herfatherleftherallhismoneywhenhedied,whichmadeherfinancially_(dependent)

光子的能量E与动量p的关系是()