关于慢性化脓性中耳炎单纯型描述有误的是() ["A．病变主要位于鼓室粘膜层","B．一般多不为轻度传导性耳聋","C．主要病理变化为鼓室粘膜充血增厚","D．间歇性流脓","E．又称咽鼓管鼓室型"]
苯丙酮尿症(phenylketonuria)
脂肪组织MRI上的信号特征是() ["A．T1WI低信号，T2WI高信号","B．T1WI高信号，T2WI低信号","C．T1WI和T2WI呈等信号","D．T1WI和T2WI呈低信号","E．TIWI和T2WI呈高信号，但T2WI信号有所衰减"]
急性脑卒中首选以下哪种检查方法() ["A．CT","B．MRI","C．MRA","D．颅骨平片","E．脑血管造影"]
粘多糖病(mucopolysaccharidosis)
尿三氯化铁试验
