心理年龄特征
Which IP telephony deployment model uses an H.225 Gatekeeper-Controlled trunk for call admission control within existing H.323 environments?（） [" single site with centralized call processing"," single site with distributed call processing"," multisite with centralized call processing"," multisite with distributed call processing"]
《第五项修炼》的作者是西蒙。
组织成功最重要的因素是建立成员彼此间在人际关系和工作上完全信任。
民事责任的构成要件包括损害事实、（）、（）、（）。
周礼
