问题
多项选择题
在RFID安全和隐私保护中,逻辑方法包括()
A.哈希锁
B.哈希链方案
C.匿名ID方案
答案
参考答案:A, B, C
在RFID安全和隐私保护中,逻辑方法包括()
A.哈希锁
B.哈希链方案
C.匿名ID方案
参考答案:A, B, C
China has decided to stop the use of free plastic bags. Supermarkets, shops and outlets(经销店) in China can’t offer plastic bags any more. Every year, people use too many plastic bags. They throw them here and there, after, they have used them. The government has done its best to deal with them but failed. While we offer quick service to customers, the plastic bags pollute the water, earth and air, and they waste the oil. The government asks people to go back to carry cloth bags and use baskets when they go to buy something. The cloth bags and baskets can be used again and again. Many months have passed. The environment has been improved a lot.
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