患者，男性，38岁，美国人，来华旅游，近1周来自觉活动后胸闷加重。自诉20年前因前纵隔占位，穿刺诊断为霍奇金病（结节硬化型），行放射治疗。17年前及12年前各复发一次，均行放射治疗。总放射剂量8000rads。门诊检查心电图提示：V1～V6导联ST段抬高。血清肌钙蛋白I定量：0.3ng／ml。胸部X线平片显示双侧胸腔积液（左0.7L，右1L），肺部CT及超声心动图提示心包增厚（最厚处＞3cm）。

结合该患者，对放射性缩窄性心包炎的叙述正确的是（）

A.心脏损伤与受照射面积及剂量相关

B.在行心包剥脱术前可行心肌活检有助于明确诊断

C.手术治疗预后良好

D.发达国家较多见

E.该患者应立即安排手术，避免病情加重发展为恶病质

F.心导管检查是诊断该疾病的标准

What is an advantage of using foam in fire fighting?（）

A.It is effective in controlling fire in flowing oil such as coming from a broken fuel line

B.It absorbs heat from materials that could cause reignition

C.Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishment

D.Once the surface is blanketed with foam and the fire is extinguished，no further foam is required