采用RIP协议的路由器，路由更新计时器设为()。
A、30秒A
暂无解析
Iappreciate________(give)theopportunitytostudyabroadthreeyearsago.
Weshallbegladtoreceiveyouoffer ___walnutmeat,shipment,____September/October;_____transshipmentatHongkong.
Hebecameasuccessfulactor________hisfatherneverwas.
Thesyntacticrulesofanylanguageare______innumber.
Welodge(声明)aclaim_______you_____theshort--weight.()
