危険物乙4(おつよん)全問解説 - 分野別一問一答と過去問

TRIPS LLC
Oct 7, 2025
  • 37.9 MB

    File Size

  • Android 10.0+

    Android OS

About 危険物乙4(おつよん)全問解説 - 分野別一問一答と過去問

The definitive version of the Otsu 4 countermeasure app! 618 frequently asked questions ranging from basic Q&A to the actual format. If you want to take Hazardous Materials Handler Otsu 4, install it now!

The definitive app for preparing for the Class 4 Hazardous Materials Handler Exam! It features 618 frequently asked questions, from basic Q&A to actual exam format.

Each question comes with a detailed explanation. There's also a feature that allows you to review all checked questions at once later.

Additionally, the "Study Methods for Hazardous Materials Class 4" page, which provides detailed instructions on how to study for the Hazardous Materials Class 4 exam, is a must-read. Please make use of it!

This app is compliant with legal changes as of April 2025 (Reiwa 7). Please use it with confidence.

All content in this app, "Hazardous Materials Class 4 (Otsuyon) All Questions and Explanations," is free to use.

If you are bothered by ads, please use the "Serious Study Plan (Ad-Free)." We apologize for the inconvenience, but if you prefer, please use the "Serious Study Plan (Ad-Free)."

Terms of Use: https://apps.trips.co.jp/terms_of_use.html

If you notice any issues, please feel free to contact us via the in-app inquiry form.

This app, "Hazardous Materials Handling Exam Class 4 (Otsuyon) - 618 Frequently Asked Questions from Basic Question-and-Answer to Full-Scale Exam Questions," is part of the "Dokugaku TODAY" series of exam preparation apps, a trusted and proven certification exam prep app with a total of 10 million downloads. It's a powerful ally for qualification acquisition and exam study. If you're planning to pass the Hazardous Materials Handling Exam Class 4, install this popular free app now!

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What's new in the latest 9.14.0

Last updated on 2025-10-07
たくさんの応援レビューありがとうございます!とても嬉しいです!
・挑戦結果画面におけるタイトル表示を改善しました!
・いくつかの収録コンテンツを加筆・修正しました
 - 危険物の性質・火災予防・消火>第2石油類 その1>第1問
 - 危険物の性質・火災予防・消火>第4石油類>第1問
 - 危険物に関する法令①>免状の諸手続き その1>第2問
・GooglePlayの新しい基準に合わせて本アプリのシステムの一部を最新化しました
これからも人気の本アプリ「危険物乙4 全問解説」を宜しくお願いします!
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危険物乙4(おつよん)全問解説 - 分野別一問一答と過去問 APK Information

Latest Version
9.14.0
Category
Education
Android OS
Android 10.0+
File Size
37.9 MB
Developer
TRIPS LLC
Available on
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Security Report

危険物乙4(おつよん)全問解説 - 分野別一問一答と過去問

9.14.0

The Security Report will be available soon. In the meantime, please note that this app has passed APKPure's initial safety checks.

SHA256:

6bacd8fd524e50d7b88c24b86d3b3b29cd2fc66e782e88b946813f38b7ade134

SHA1:

a24a9d78ac3a74aaf7ab42d924aa0dc3316af7de