单项选择题
A.低血钾B.低血压C.糖尿病D.水牛背
A.280-320nmB.320-400nmC.350-400nmD.400-450nm
A.苔藓样变B.脓疱C.结节D.丘疹
A.囊肿B.脓疱C.结节D.肿块
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