患者,男性,50岁。有慢性肝炎病史20年,近期肝区持续胀痛。查B超发现肝右前叶4cm×3cm占位性病变。有助于明确诊断的检验是()。
A. HBsAg(+)
B. RBC7×109/L
CA19-950ng/ml
D. AFP2000μg/L
E. TB22mmol/L
On the serial interface of a router, an inbound access list is configured to deny all traffic from UDP and TCP ports 21, 23, and 25. All other traffic is permitted. Based on this information, which types of traffic will be allowed through this interface?()
A. SMTP
B. DNS
C. FTP
D. Telnet
E. HTTP
F. POP3