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【单选题】
周先生患尿毒症，护士给予留置导尿12h后引流出尿液180ml，以下哪项评估最能确定其目前的尿量状况A.
正常
B.
少尿
C.
无尿
D.
尿量偏少
E.
尿潴留
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反馈参考答案：
举一反三
【多选题】With regard to bridges and switches, which of the following statements are true?（）
A.
Switches are primarily software based while bridges are hardware based.
B.
Both bridges and switches forward Layer 2 broadcasts.
C.
Bridges are frequently faster than switches.
D.
Switches typically have a higher number of ports than bridges.
E.
Bridges define broadcast domain while switches define collision domains.
F.
Both bridges and switches make forwarding decisions based on Layer 2 addresses.
【单选题】Originally designed to accept input from devices called ____, mainframes today are typically accessed by desktop computers.
A.
LCDs
B.
pods
C.
ports
D.
terminals
【多选题】Which two statements are true about the configuration of voice VLANs？（）
A.
Static secure MAC addresses can be configured in conjunction with voice VLANs.
B.
PortFast is automatically enabled when voice VLANs are configured.
C.
PortFast must be manually configured when voice VLANs are configured.
D.
Voice VLANs are typically configured on uplink ports.
E.
Voice VLANs are typically configured on access ports.
【简答题】急性毒性试验一般观察时间是（ ）。
【多选题】Bridges and switches are Layer 2 devices that provide the same basic functionality but that also have some differences. Which two traits apply to switches only？（）
A.
supports Layer 2 VLANs
B.
segment LANs
C.
are faster because forwarding decisions are made on hardware
D.
typically have fewer ports because forwarding decisions are made in software
E.
flood frames out all ports
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