题目内容
有关脑白质与灰质血流量的差异，以下哪项 是正确的
2022-03-21
A.白质血流量是灰质的3倍
B.灰质血流量是白质的3倍
C.白质血流量是灰质的2倍
D.灰质血流量是白质的2倍
E.白质血流量比灰质略多
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