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
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甲类钢随钢号的增大，钢的强度降低，而塑性增加。
A. 正确
B. 错误
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
多数女性是家庭消费中的主要决策者。
A. 正确
B. 错误
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