CT测量右肺动脉心包段管径的理想部位为（） A.右肺动脉起始部

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问题单项选择题 A1/A2型题

CT测量右肺动脉心包段管径的理想部位为（）

A.右肺动脉起始部

B.右肺叶间动脉经上腔静脉与中间支气管之间至肺门

C.左、右主支气管前方右肺动脉

D.右肺上叶支气管前内侧肺动脉

E.右肺门区右肺动脉

答案

参考答案：B

多项选择题

生产力系统中的准备性因素( )。

A．是生产力的独立因素

B．主要指教育

C．它们本身并不是生产力

D．其作用在于为继承和发展生产力作准备

单项选择题

When I talked with my grandma on the phone, she sounded weak, but by the time we ______ up, her voice had been full of life.

A. were hanging

B. had hung
C. hung

D. would hang