以下哪个不是IP组播的特点?
A、发送方必须是组成员A
暂无解析
WefeelgreatregretthatwecannolongersupplythegoodsyouorderastheproductionhasbeendiscontinuedsincelastAugust.
HowtoDealwithaHeavyWorkload
公路集装箱运费的特点（）。
Haveeasyaccessto
Everyyear,about10millionofthe150millionworkersintheEuropeanCommunityareaffectedbyincidents,”accidents”ordiseasesatwork.
