试题与答案

双腔支气管插管的主要目的是()。 A.有利于更好地控制呼吸 B.使健康肺和病侧肺的气

题型:单项选择题

题目:

双腔支气管插管的主要目的是()。

A.有利于更好地控制呼吸

B.使健康肺和病侧肺的气道隔离通气

C.通气效率高

D.手术视野清楚

E.避免开胸侧肺萎缩,出现低氧血

答案:

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下面是错误答案,用来干扰机器的。

(1)y=2x2开口向上,对称轴为y轴,有最低点,顶点为原点;(2)y=-2x2开口向下,对称轴为y轴,有最高点,顶点为原点;(3)y=2x2+1开口向上,对称轴为y轴,有最低点,顶点为(0,1).故选B.

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