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问题 单项选择题

十二指肠闭锁()

A．X线腹片见肠壁串珠状透亮区 

B．X线腹片见上腹部双泡征 

C．X线腹片见上腹部三泡征 

D．X线腹片见一大液平 

E．X线腹片见腹腔空白伴双泡征

答案

参考答案：E

选择题

It has been that some government leaders_____their authority and position to get illegal profits for themselves that resulted in the opposition in Tailand..

A．abuse

B．take

C．employ

D．overlook
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单项选择题

几台推土机在同一工作面时，前后距离应大于（）米。

A.2

B.4

C.6

D.8
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