HTTPs的安全机制工作在 (85) ,而S-HTTP的安全机制工作在 (86) 。
A.网络层 B.传输层 C.应用层 D.物理层
参考答案:B
She liked this dress of pattern____and bought some material to make a suit at home. [ ]
A. in particular
B. in the fresh
C. on the other hand
D. by coincidence
内径为20mm的阀门,其公称直径为()mm。