CT扫描示主动脉弓左侧圆形结节影，向足侧连续多个层面均可见有明

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问题单项选择题

CT扫描示主动脉弓左侧圆形结节影，向足侧连续多个层面均可见有明显增强，提示为（）

A.左侧膈神经

B.永存左上腔静脉

C.主动脉弓旁淋巴结

D.左上肺动脉

E.左上肺静脉

答案

参考答案：B

单项选择题

买方未在约定期限对引进设备进行检验，视为( )。

A．设备已检验

B．已接收设备

C．放弃检验权

D．放弃索赔权

选择题

__________,we must believe in ourselves and believe that we can do something well.

A．However life is difficult

B． However is life difficult

C．However difficult life is

D． However difficult is life