单项选择题
颅骨X线平片后前位像上,内耳道宽径不超过(),两侧相差不超过()
A.11mm,1mm
B.12mm,1mm
C.12.5mm,1mm
D.10mm,0.5mm
E.11mm,0.5mm
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单项选择题
A.11mm,1mm
B.12mm,1mm
C.12.5mm,1mm
D.10mm,0.5mm
E.11mm,0.5mm
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