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问题 单项选择题

一侧颈内动脉闭塞，可无临床症状，是因为（）

A.同侧颈外动脉未闭塞

B.对侧颈内动脉未闭塞

C.正常脑底动脉环可迅速建立侧支循环

D.双侧椎动脉未闭塞

E.颅内血管变异

答案

参考答案：C

问答题 简答题

心脏病病人非心脏手术麻醉的基本要求是什么?
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单项选择题

Which of the following home care activities would be appropriate for a client with a laryngectomy

A．Keep the stoma opening covered at all times.

B．Participate in activities such as walking and golfing.

C．Stay inside in an air-conditioned environment in the summer.

D．Avoid showering; take tub baths instead.
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