证券公司、推广机构应当保证集合资产管理合同的总金额不得低于《证券公司证券资产管理业务试行办法》规定的最低金额。( )

Each machine in the internet is assigned a unique network address,called（）,that is used to identify the machine for communication purposes

A、MAC address

B、IP address

C、host address

D、domain name address