Virtual PortChannels (vPCs) allow links that are physically connected to two different Cisco switches to appear to a third downstream device as coming from a single device and as part of a single port channel. Which of the following are components of a Virtual PortChannel system? ()
A. Two peer devices: the vPC peers of which one is primary and one is secondary and are part of a vPC domain.
B. A Layer 3 Gigabit Ethernet link called peer-keepalive link to resolve dual-active scenarios
C. A redundant 10 Gigabit Ethernet PortChannel called a peer link to carry traffic from one system to the other when needed
D. vPC member ports forming the PortChannel
E. A dot1q trunk between the vPC peers
F. A management port that can be used as peer-keepalive link to resolve dual-active scenarios.
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从个体发展的角度看,终身教育的目的在于帮助()不断适应社会生活的变迁和完成其()化的过程,使每一个社会成员成为一个完善的人。而从社会发展的角度看,终身教育的目的在于完成()的改造与发展,使社会在全体成员不断学习的基础上更回快速、有效、和谐和圆满地得到()。
模板和支架支承部分安装在基土上时,应加设垫板,垫板应有足够强度和支撑面积,且应中心承载,基土应坚实,并有排水措施。
A. 正确
B. 错误
患者女性,40岁,一年前查体发现左下腹部直径约5cm实性肿物,未复查。一天前排尿时突然下腹痛,伴恶心,无发热。查体见子宫正常大,子宫左上方触及直径约14cm肿块,张力较大,不活动,有压痛。B超提示为卵巢肿物,内有不均质回声。直肠子宫陷凹有少量积液。本例最可能的诊断为()
A. 卵巢肿瘤恶变
B. 卵巢肿瘤破裂
C. 卵巢肿瘤蒂扭转
D. 继发感染
E. 阑尾炎穿孔包裹
患者女,36岁,13年前因甲状腺肿物行甲状腺左叶全切除,右叶次全切除,中央区淋巴结清扫术,病理证实为甲状腺乳头状癌,3年前发现左颈部外侧肿物。甲状腺增强CT显示左颈侧方淋巴结肿大;细针穿刺怀疑转移。手术治疗,行改良型颈侧方淋巴结清扫术。术后易出现的并发症不包括()。
A. Horner综合征
B. 饮水呛咳
C. 声音嘶哑
D. 耳部感觉障碍
E. 吞咽困难