在左前斜位片上心脏后下缘明显凸出，提示()
在右前斜位片上食管压迹加深，提示()

A.左心室增大

B.右心室增大

C.左心房增大

D.右心室增大

E.以上都不是

Which of the following statements about debt securities is least accurate（）

A. Commercial paper is a short-term (less than nine months) vehicle for corporate borrowing.

B. A MTN is a shelf-registered debt instrument that is continually offered to investors by an agent of the issuer and varies in maturity from nine months to over 30 years.

C. A medium-term note (MTN) differs from a corporate bond in that a MTN is sold to investors on a "firm commitment" basis wherein the investment banker guarantees a price to the issuer.