根据《关于解决国家和他国国民之间投资争端公约》，甲缔约国与乙缔约国的某公司通过书面约定一致同意：双方之间因直接投资而产生的争端，应直接提交解决投资争端国际中心仲裁。据此事实，下列哪一选项是正确的( )。

A．任何一方可单方面撤销对提交该中心仲裁的同意
B．在中心仲裁期间，乙国无权对该公司行使外交保护
C．在该案中，任何一方均有权要求用尽当地救济解决争端
D．对该中心裁决不服的一方有权向有管辖权的法院提起撤销裁决的诉讼

(66) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string. (67) is a protocol that most USENET machines how use it to allow news articles to propagate from one machine to another over a reliable connection. (68) is an approach preferred by cable TV providers. In this solution the fiber terminates at an optoelectrical converter and the final segment is a shared coaxial cable. (69) is a device used to connect two separate network that use different communication protocol. (70) js a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

A．ADSL

B．FTTC

C．HFC

D．FTTH