问题
单项选择题
组织间插植布源规则中，不正确的是（）。
A.植入的放射源必须是直线型
B.植入的放射源彼此互相平行
C.各线源等分中心位于同一平面
D.各源相互等间距
E.排列必须是等边三角形
答案
参考答案：E
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组织间插植布源规则中，不正确的是（）。
A.植入的放射源必须是直线型
B.植入的放射源彼此互相平行
C.各线源等分中心位于同一平面
D.各源相互等间距
E.排列必须是等边三角形
参考答案：E
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