在PIMDM协议中存在的报文是（） A: Join/Prune B: Assert C: Bootstrap D: Register

In the movie Up,a worker said to Carl,‘You poured prune juice in his gas tank.’ 这句话的引申义为：（ ）

Which three message types are valid PIMv2 message types？（） A: Register B: Register-Stop C: Join/Prune D: Reject E: Register-Prune F: Register-Join

根据信用证及相关资料填制保单 Description of goods A: HALF DRIED B: HALF DRIED PRUNE 2004CROP C: CIF D: CLOTHING