关于SIP协议的描述中,正确的是
A、被SIP被QQ采用C
暂无解析
Nowthatyouknowallthefacts,youcanmakeaninformed___(choose).
花样滑冰运动员绕通过自身的竖直轴转动,开始时两臂合拢,转动惯量为J0,角速度为ω0;当其两臂伸开后,角速度变为5ω0/6,则其转动惯量变为(忽略阻力)
InAugust1977,asatellitetogatherdataaboutthe10millionblackholeswhicharethoughttobeintheMilkyWay.
一质点做匀速率圆周运动时,其()
Apersonisluckyifhiscareer________withhisinterestandhobby