硅沉着病（矽肺）诊断主要依据不包括以下哪项（）
A.接触粉尘的职业史
B.临床症状
C.CT检查
D.胸片
E.肺功能检查
参考答案：E
解析：硅沉着病诊断依据职业史：接触游离二氧化硅。诊断标准：流行病学调查、症状和X线检查结果。诊断标准分级和确诊：四级（X线胸片）分别为无硅沉着病及一期、二期、三期。A、B、C都有助于诊断硅沉着病，D可以分析损害的程度比胸片更准确，可以诊断硅沉着病。E是肺的功能的判断，与诊断硅沉着病无直接相关性，故选E。
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