毎日1問、正解者には6つの富を報酬として、参加者には2つの富を報酬として支給;第459題
Thread Content
複数選択問題:工業上で言う「三酸二アルカリ」には、通常含まれないものは( )。 A、硫酸 B、リン酸 C、水酸化ナトリウム D、硫化ソーダ 答え:BD三酸は:硫酸、塩酸、*ao酸
二碱は:炭酸ナトリウム、水酸化ナトリウム
**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections
Submit Request — Free ConsultationThis is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.