甲醇精製版の安全についての問題
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ガスコンロの接続部に漏气がないかどうかをチェックするには、以下の方法を使用します。( ) )。 A.明火を使用 B.石鹸水を使用 C.鼻で嗅ぐ D.専門の人员を呼び寄せる
Bを使用。作为化工人，这点完全能自己解决、没必要找人浪费钱、如果装置上的泄露、必须要及时汇报、然后再查漏。
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