What are three features of the IPV6 protocol?（）
A. complicated header
B. plug-and-play
C. no broadcasts
D. checksums
E. optional IPsec
F. autoconfiguratio
If the buyer charters a ship and sends for the goods，the transit（）by shipment of the goods，although the seller does not know where the goods are being taken.
A. is terminated
B. is stopped
C. is not terminated
D. is not stopped
微信支付 
支付宝支付