外周阻力过低的休克患者使用哪种药物

A．去甲肾上腺素

B．肾上腺素

C．多巴胺

D．尼可刹米

An analyst does research about debt covenants. Which of the following least likely lowers the risk to creditors A debt covenant specifying a minimum level of the borrower's:

A. current ratio.
B. dividend payout ratio.
C. interest coverage ratio.