危険物乙4類問題集
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1K+
Downloads
Everyone
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About this app
The definitive version of the Dangerous Goods Handler Class B Class 4, Otsu 4 countermeasure app! 240 questions carefully selected to the production format.
With detailed explanations for all problems.
This application "Hazardous materials Otsu 4 problem collection" is free. You can use all functions and all problems for free.
If you take Dangerous Goods Handler Otsu 4, install this free app now!
With detailed explanations for all problems.
This application "Hazardous materials Otsu 4 problem collection" is free. You can use all functions and all problems for free.
If you take Dangerous Goods Handler Otsu 4, install this free app now!
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location, App activity, and Device or other IDs
Data is encrypted in transit
Data can’t be deleted
What’s new
2024.09.10 システムの修正
2023.01.31 アプリを販売開始しました
2023.01.31 アプリを販売開始しました
App support
About the developer
馬場和樹
tsugumikaduki@gmail.com
湖北台７丁目
ＵＲ湖北台７－８５ ３０７
我孫子市, 千葉県 270-1132
Japan
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