下图是血液循环和气体交换示意图请据图回答 1图中的7所指的是 内流 血5内流 血2血液由2射出流经56到3的循环途经叫 Template




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tomski下图是血液循环和气体交换示意图请据图回答 1图中的7所指的是 内流 coloring