答案:B
Dot-com companies are often valued by applying the () ratio.
A. Price/Sales.
B. Price/Earnings.
C. Price/Cash Flow.
患者,女性,50岁。胸背部疼痛1天余。查体:呼吸音减弱。胸部CT强化如图。
CT图片显示的征象包括()
A.升主动脉充盈缺损
B.降主动脉充盈缺损
C.主动脉增粗
D.降主动脉线样隔膜
E.纵隔淋巴结肿大
F.降主动脉旁少量积液