提高恶性肿瘤治愈率的关键在于（）
A.化学治疗
B.早期治疗
C.手术治疗
D.免疫治疗
E.放射治疗
参考答案：B
电解槽的火苗呈蓝紫色，有可能是槽底有沉淀和结壳。
A client who suffered blunt chest trauma in a car accident complains of chest pain, which is exacerbated by deep inspiration. On auscultation, the nurse detects a pericardial friction rub--a classic sign of acute pericarditis. To relieve chest pain associated with pericarditis, the nurse should encourage the client to assume which position（）
A. Semi-Fowler’s.
B. Leaning forward while sitting.
C. Supine.
D. Prone.
