前庭阶与鼓阶相通的部位是()
A.卵圆窗
B.蜗窗
C.骨半规管
D.膜半规管
E.蜗孔
参考答案:E
下述哪项不是减少散射的办法?()
A、采用铅增感屏
B、使用荧光增感屏
C、使用铅罩板
D、使用过滤片
What was the author's attitude toward the radical
A.He supported it wholeheartedly.
B.He opposed it ply.
C.He disapproved to some extent.
D.He ignored it completely.