wèn qīng chōng zhí fāng shì, fá mén wèi zhì, bào jǐng qì shēng yīn hé jǐn jí lián xì rén

问清充值方式、阀门位置、报警器声音和紧急联系人。

Ask clearly about the recharge method, valve location, alarm sound, and emergency contact.