【单选题】
下列哪种情况为洋地黄的适应症___
A. 高度房室传导阻滞，心功能IV级
B. 肥厚型梗阻性心肌病，心功能II级
C. 预激综合征伴房颤及急性左心衰竭
D. 急性心梗24小时后发生心率过快的房颤
E. 重度二尖瓣狭窄伴窦性心动过速及急性肺水肿
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答案
D
解析
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相关试题
【单选题】
下列哪种情况禁用洋地黄___
A. 病毒性心肌炎并心力衰竭
B. 急性心梗合并左心衰竭
C. 慢性肺心病合并右心衰竭
D. 有风湿活动的二尖瓣狭窄合并心功能不全
E. 心室率过快的房颤，心电图R波初始部位粗钝者
【单选题】
下列哪种情况，最适宜用洋地黄___
A. 急性风湿热伴心动过速
B. 快速心室率的房颤伴心力衰竭
C. 甲亢伴心动过速
D. 缩窄性心包炎伴肝肿大、腹水
E. 肺心病伴心功能不全
【单选题】
下列哪种情况不是使用洋地黄的禁忌症___
A. 低钾引起的室性心律失常
B. I度房室传导阻滞伴心力衰竭
C. II度II型房室传导阻滞伴心力衰竭，无心脏起搏条件
D. 肥厚性主动脉瓣狭窄
E. 预激综合征并房颤
【单选题】
下列最合适用洋地黄的是___
A. 窦性心动过速，110次/分
B. 房颤，心室率60次/分
C. 室上性心动过速，160次/分
D. 文氏型房室传导阻滞
E. 房扑，心室率150次/分
【单选题】
以下诊断洋地黄中毒，最为特异的心电图改变是___
A. 窦性心动过速
B. 房扑转为房颤
C. Q-T间期缩短
D. P-R间期由0.19秒增至0.21秒
E. 房性心动过速合并房室传导阻滞
【单选题】
下列哪项符合典型心绞痛___
A. 呼吸困难伴典型心电图T波改变
B. 劳累后心尖部针刺样疼痛
C. 劳力时历时数分钟胸骨后压榨感
D. 心前区痛含硝酸甘油5分钟后缓解
E. 胸痛伴心电图胸导联ST段抬高而无衍变
【单选题】
下列哪一条不符合典型心绞痛___
A. 在体力负荷、情绪激动时发生
B. 常突然发生而迫使病人立即停止活动
C. 疼痛部位在左心前区
D. 疼痛历时1-5分钟
E. 疼痛放射至左肩及左上肢内侧
【单选题】
下列哪项表现不符合典型心绞痛发作___
A. 胸骨后压榨性疼痛
B. 疼痛很少超过15分钟
C. 休息后5分钟内消失
D. 含硝酸甘油1分钟内疼痛缓解
E. 疼痛发作均有诱因
【单选题】
急性心肌梗死最早期的心电图改变是___
A. ST段明显抬高，呈弓背向上的单向曲线
B. 出现异常Q波和ST段抬高
C. 出现异常Q波，ST段抬高和T波倒置
D. T波高耸
E. 以R波为主的导联ST段呈水平型下降
【单选题】
有关急性心肌梗死下列哪项不正确 ___
A. 造成冠状动脉血供中断的病因大多为冠状动脉内血栓形成
B. 严重心律失常致心排血量骤降，冠状动脉灌流量锐减是病因之一
C. 往往在饱餐后，安静或睡眠时及用力大便后
D. 主要使左心室受累，但常合并右室及心房梗死
E. 个别病人可因冠状动脉痉挛引起管腔闭塞，而冠状动脉无严重狭窄
【单选题】
休克的基本原因是___
A. 低血容量或感染便心排血量下降
B. 心收缩力下降，心排血量下降
C. 周围血管扩张，毛细血管床扩大
D. 有效循环血量不足，脏器的微循环灌注不良
E. DIC
推荐试题
【单选题】
What is the best definition of hairpinning？___
A. ingress traffic that traverses the outbound interface on a device
B. traffic that enters one interface on a device and that exits through another interface
C. traffic that enters and exits a device through the same interface
D. traffic that tunnels through a device interface
【单选题】
Which SNMPv3 security level provides authentication using HMAC with MD5， but does not use encryption？___
A. authPriv
B. authNo Priv
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【单选题】
You have implemented a dynamic blacklist， using security intelligence to block illicit network activity. However， the blacklist contains several approved connections that users must access for usiness pur poses. Which action can you take to retain the blacklist while allowing users to access the approve d sites？___
A. Create a whitelist and manually add the approved addresses.
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C. Edit the dynamic blacklist to remove the approved addresses
D. Disable the dynamic blacklist and create a static blacklist in its place
【单选题】
When connecting to an external resource,you must change a source IP address to use one IP address from a range of 207.165.201.1 to 207.165.1.30. Which option do you implement ?___
A. dynamic source NAT that uses an IP ad dress as a mapped source
B. static destination NAT that uses a subnet as a real de stination
C. dynamic source NAT that uses a range as a mapped source
D. static destination NAT that uses a subnet as a real source
【单选题】
Refer to the exhibit. 【nat（ins，any）dynamic interface】Which ty pe of NaT is configured on a Cisco ASA？___
A. dynamic NAT
B. source identity NAT
C. dynamic PAT
D. identity twice NAT
【单选题】
Which mitigation technology for web-based threats prevents the removal of confidential data from the network？___
A. CTA
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D. DLP
【单选题】
Refer to the exhibit. What is the effect of the given configuration？___
A. It establishes the preshared key for the switch
B. It establishes the preshared key for the firewall.
C. It establishes the preshared key for the Cisco ISE appliance
D. It establishes the preshared key for the router.
【多选题】
What are two major considerations when choosing between a SPAN and a TAP when plementing IPS？___
A. the type of analysis the iS will perform
B. the amount of bandwidth available
C. whether RX and TX signals will use separate ports
D. the way in which media errors will be handled
E. the way in which dropped packets will be handled
【多选题】
What are two direct-to-tower methods for redirecting web traffic to Cisco Cloud Web Security？___
A. third-party proxies
B. Cisco Catalyst platforms
C. Cisco NAC Agent
D. hosted PAC files
E. CiSco ISE
【多选题】
Which three descriptions of RADIUS are true？ ___
A. It uses TCP as its transport protocol.
B. Only the password is encrypted
C. It supports multiple transport protocols
D. It uses UDP as its transport protocol
E. It combines authentication and authorization
F. It separates authentication，authorization，and accounting
【多选题】
Which two configurations can prevent VLAN hopping attack from attackers at VLAN 10？___
A. using switchport trunk native vlan 10 command on trunk ports
B. enabling BPDU guard on all access ports
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D. applying ACl between VLAN
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F. using switchport nonegotiate command on dynamic desirable ports
【多选题】
What are two features of transparent firewall mode ___
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C. It enables the aSA to perform as a router.
D. It acts as a routed hop in the network.
E. It is configured by default
【多选题】
Which two models of A sa tend to be used in a data center？___
A. 5555X
B. 5585X
C. ASA service module
D. 5512X
E. 5540
F. 5520
【多选题】
Which two statements about hardware-based encrption are true？___
A. It is widely accessible
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C. It requires minimal configuration
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【多选题】
In which two modes can the Cisco We b Security appliance be de ployed？___
A. as a transparent proxy using the Secure Sockets Layer protocol
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【单选题】
24．对于工作环境恶劣、启动频繁的异步电动机，所用热继电器热元件的额定电流可选为电动机额定电流的___倍。
A. 0.95~1.05
B. O.85~0.95
C. 1.05~1.15
D. 1.15~1.50
