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毎日1問、正解しても賞品なし、楽しみが目的

2019-12-28View Original

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56. 油洗浄は連続して()時間稼働させた後、フィルター網に硬質の不純物がないことを確認して初めて合格とみなされる。?A、2 B、4?C、3 昨日の問題の答え:A 55. 薄壁瓦を使用中に軸との間で研摩事故が発生したが、その原因は()。?A、潤滑油供給なし B、軸受カバーボルトの締め付けトルクが過大 C、軸受の隙間が大きい

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