咸味药的作用是（）
A.收敛固涩、补益肝肾
B.泻下攻积、清热利尿
C.软坚散结、泻下通便
D.软坚散结、利水消肿
E.缓急止痛、补血活血
参考答案：C
To keep certain information private and secure while providing remote access for employees, many businesses are creating intranets. An intranet is an (71) organizational internet that is guarded against outside access by a special (72) feature called a firewall (which can be software, hardware, or a combination of the two).
A．interconnection
B．security
C．isolation
D．access
高压部分法兰必须使用（）垫子。
