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### 一、填空题(共8题, 64分)
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1. 已知集合 $M = \{ u | u = 12m + 8n + 4l, m, n, l \in \mathbb{Z}\}$, $N = \{ v | v = 20p + 16q + 12r, p, q, r \in \mathbb{Z}\}$, 则 $M$ 与 $N$ 的关系是______
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1. 已知集合 $M = \\{ u | u = 12m + 8n + 4l, m, n, l \in \mathbb{Z}\\}$, $N = \\{ v | v = 20p + 16q + 12r, p, q, r \in \mathbb{Z}\\}$, 则 $M$ 与 $N$ 的关系是______
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