考试时精神高度紧张 ,合理的饮食营养对提高脑力劳动效率、消除疲劳有重要作用。实验证明蛋白质及 B族维生素对中枢神经高级部位的功能有密切关系。所以 ,在大脑中枢神经细胞处在紧张活动的条件下 ,蛋白质、类脂质、B族维生素及维生素 A的代谢过程要加强 ,但热量消耗并不增加或 Examination of the spirit of the high tension, a reasonable diet and nutrition to improve the efficiency of mental labor, fatigue play an important role. Experiments show that protein and B vitamins are closely related to the function of the senior parts of the central nervous system. Therefore, the central nervous system in the brain under stressful conditions, protein, lipid, B vitamins and vitamin A metabolism to be strengthened, but the heat consumption does not increase or