患者男，56岁，吸烟、嗜酒，劳力性气促3年，间断下肢水肿6个月，近1个月静息呼吸困难，心电图示窦性心率，室性期前收缩。患者最后确诊为酒精性心肌病，左心室射血分数下降的心力衰竭，你的治疗方案是（）
A. 戒烟、戒酒
B. 戒酒
C. ACEI
D. 螺内酯
E. β–受体阻滞剂
F. 利尿剂
What is the statistical reserve？（）
A. Bandwidth that is reserved for SVCs to route over a trunk
Bandwidth that is reserved on a trunk so that ABR connections can burst
C. Bandwidth on a trunk that is reserved for control traffic and cannot be used by connections
D. Bandwidth that cannot be allocated to connections but can be used to accommodate statistical variations in the traffic
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