此切面是辨别上腔静脉连续性中断，而奇静脉或半奇静脉连续性正常。

This is the final level at which to recognize an inferior vena cava interruption with azygos or hemizygos continuation.

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目的：观察具有抗氧化作用的亚力克对一次性灌服和连续灌服乙醇所致实验动物空间辨别和记忆获得障碍的预防作用。

AIM: To observe the preventive effects of ALEC injection, which has the anti-oxidation, on the spatial discrimination and memory disorders induced by once or successive perfusion of ethanol.

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