什么是总线请求?8086在最小工作模式下,有关总线请求的信号引脚是什么?
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患儿,男,1岁5个月,突然发生剧烈阵发性腹痛7小时,哭闹不安,家长述呕吐物为胃内容物,观患儿屈膝缩腹,面色苍白,出汗,持续数分钟后腹痛缓解,间歇10分钟后又反复发作,查体直肠指检有血便,右上腹触及腊肠样肿块,表面光滑,稍可移动。该患儿可确诊为()
A. 慢性肠套叠
B. 直肠肛管病
C. 轮状病毒性肠炎
D. 急性肠套叠
E. 急性坏死性肠炎
男性,42岁。因坠落致全身多处伤,伤后感呼吸困难1.5小时入院。胸部CT及X线检查诊断左侧连枷胸、肺挫伤。行开胸探查,肺修补及肋骨内固定术。术后第2天引流出血性液体800ml,观察3小时,每小时引流出血性液体200ml。BP97/65mmHg,HGB66g/L,P120次/分。紧急处理措施是()。
A. 继续观察病情变化
B. 立即大量输血、输液,抗休克治疗
C. 立即胸部CT检查
D. 立即更换闭式引流管
E. 立即输血等术前准备,行开胸止血
李明在一次意外事故中导致了部分伤残,无法从事较为繁重的工作。李明在伤残前每月工资收入为3500元,在伤残后,他的月收入减少了60%。他所购买的伤残保单的全残给付比例是65%,假设在没有其他伤残收入来源的情况下,他可以得到的部分伤残收入保险金是()元。
A. 910
B. 1365
C. 1400
D. 2275
A network administrator wants to ensure that only the server can connect to port Fa0/1 on a Catalyst switch. The server is plugged into the switch Fa0/1 port and the network administrator is about to bring the server online. What can the administrator do to ensure that only the MAC address of the server is allowed by switch port Fa0/1 (Choose two.)()。
A. Configure port Fa0/1 to accept connections only from the static IP address of the server.
B. Employ a proprietary connector type on Fa0/1 that is incompatible with other host connectors.
Configure the MAC address of the server as a static entry associated with port Fa0/1.
D. Bind the IP address of the server to its MAC address on the switch to prevent other hosts from spoofing the server IP address.
E. Configure port security on Fa0/1 to reject traffic with a source MAC address other than that of the server.
F. Configure an access list on the switch to deny server traffic from entering any port other than Fa0/1.