以下有关肾上腺嗜铬细胞瘤的描述,错误的是() ["瘤体常呈中等回声,有时可见到囊性液暗区","超声所见包膜呈高回声","以良性居多,约有2%为恶性","肿瘤多数为双侧性","肾上腺外的嗜铬细胞瘤多见于肾门附近"]
Addison病的治疗包括() ["A.增加食盐量","B.应用糖皮质激素","C.应用ACTH","D.应用盐皮质激素","E.甲状腺素"]
流行病学实验研究的最重要优点是() ["随机分组提高了实验组与对照组的均衡性","可以很好地控制研究中的各类偏倚","研究对象可以从中受益","可以计算发病率与相对危险度","提高了验证因果关系的正确性"]
心室肌细胞动作电位2期复极的离子基础是() ["Na+内流、K+外流","K+外流、Cl-内流","K+外流、Ca2+内流","Na+外流、K+内流","K+内流、Ca2+内流"]
医务人员进行自我道德评价的方式是() ["名誉","动机","良心","效果","感觉"]
简述低钙血症的临床表现和治疗。