患者，女，患病初期月经先后无定期，量多或少，曾经停经3个半月后突然 * * 大量出血，治疗后经量减少，但仍淋漓不净，经血色紫黑有块，小腹疼痛拒按。诊断为

A．月经先后无定期
B．崩漏
C．闭经
D．崩中
E．痛经

Basically, a firewall is a (145) process or a set of integrated processes that runs on a router or (146) to control the flow of networked application traffic (147) through it. Typically, firewalls are placed on the entry point to a (148) network such as the Internet. They could be considered traffic cops. The firewall’s (149) is to ensure that all communication between an organization’s network and the Internet conform to the organization’s policies.

A．dependent

B．isolated

C．related

D．standalone