[问答题] 什么是灌水率？如何绘制灌水率图？其修正原则是什么？ 

目前常用标记白细胞的2种放射性药物是（） ["¹¹¹In-oxine，^99mTc-HMPAO","¹¹¹In-DTPA，^99mTc-HMPAO","¹¹¹In-DTPA，^99mTc-ECD","^99mTc-MAG，¹¹¹In-DTPA","¹¹¹In-oxine，^99mTc-DTPA"] 食积脾虚夹积证临床可见（） ["夜寐难安","腹满喜按","呕吐酸腐","舌红苔厚腻","大便溏薄不臭"] 胸部创伤下列哪种情况不是立即开胸探查指征（） ["进行性血胸","食管裂伤","胸内异物存留，有咯血等临床症状","创伤性窒息","气管、支气管断裂"] 治疗食积乳食内积证可选择（） ["消乳丸","肥儿丸","保和丸","资生健脾丸","枳术丸"] 卵巢肿瘤最常见的并发症是（） ["扭转","破裂","感染","出血","恶变"] 什么是灌水率？如何绘制灌水率图？其修正原则是什么？