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毎日1問、正解しても賞品なし、娯楽を目的とする

2019-12-22View Original

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?50.キーレスカップリングは()を使用して組み立てます。A、冷間収縮法が適している B、液圧法 C、打撃法 昨日の問題の答え:A 49.()とは、金属が外力を受けても破壊されない永久変形能力のことである。?A、塑性 B、靭性 C、弾性

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