During guarantee , pass the word that after repairing , still cannot use normally 2 times , consumer has a demand , the person that sell must termless undertake changing or return money 在保修期间，经过2次修理后仍不能正常使用的话，消费者有要求，销售者必须无条件进行更换或退货。
2.
Because termless " check inventory reduction sale " activity a kind of price is actually con behavior , it violated fairness to trade principle , the legitimate rights and interests that encroached consumer counterpoises 因为无限期的“清仓甩卖”活动实际上一种价格欺诈行为，它违反了公平交易原则，侵犯了消费者的合法权益权。
3.
On the whole , bb84 + quantum cryptographic key distribution project is far from a termless absolute secure one in the perspective of theory , because the efficiency is enhanced on the sacrifice of security decreased . what ' s more , some works are done to strengthen the cryptograph in the field of identity authentication and other sectors , and the enhancement of efficiency strongly supports the cryptograph 综合来看， bb84 +量子密钥分配方案并不是一个理论上无条件绝对安全的方案，他在安全性能上的降低得到的代价却是效率的极大提高，并且此方案在身份认证和其他环节上对其有所降低的安全性能作了保密加强的工作。
4.
Current , the basic form of our country most - favoured - nation treatment is bilateral mutually beneficial is termless , it offers a regulation through the most - favored - nation clause in bilateral agreement , these clauses basically apply to a foreigner to be in china the economic domain such as investment and commerce and shipping respect 目前，我国最惠国待遇的基本形式是双边互惠无条件的，它通过双边协议中的最惠国条款给予规定，这些条款主要适用于外国人在华投资和贸易等经济领域以及航运方面。
5.
The termless security of quantum cryptographic key protocol is based on the quantum non - clone principle and heisenberg uncertainty principle . whilst , these two characteristics mentioned above contributes greatly to solve the problems of low transmitting rate , complicated operation and forge - identity assault in the bb84 protocol 量子密钥协议的无条件安全性能主要建立在量子不可克隆定理和heisenberg的测不准原理两大理论基础上的，但也正是由于量子的这两种特性导致在bb84协议中存在了传输效率低下、操作复杂、假冒身份攻击等方面的问题。
