细胞通讯(cellcommunication)
参考答案:
在多细胞生物的细胞社会中,细胞间或细胞内高度精确和高效地发送与接受信息的通讯机制,并通过放大机制引起快速的细胞生理反应。
以下哪个评定指标为定量指标()。
A.阳性
B.心功能分级
C.关节活动范围
D.心脏杂音分级
E.正负
(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.MD
B.RSA
C.DES
D.MIB