题目内容

某休克患者进行扩容疗法快速输液时，监测CVP为15cmH02，血压80/60mmHg，应采取的措施是()

A. 大量输液，加快速度
B. 控制速度，减慢愉液
C. 减慢输液，加用强心剂
D. 暂停输液
E. 用升压药

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Which one of the following characteristics is true regarding the use of hubs and switches?（）

A. Hubs can have their ports be configured with VLANs
B. Using hubs is costly with regard to bandwidth availability.
C. Switches can not forward broadcasts.
D. Switches are more efficient than hubs in processing frames.
E. Switches increase the number of collision domains in the network.

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