Last Updated：2025/11/26
Sentence
請負業者は、耐久性と柔軟性を高めるために屋根防水膜に改質アスファルトの使用を勧めました。
Quizzes for review
The contractor recommended using modified bitumens for the roof membrane to improve durability and flexibility.
See correct answer
The contractor recommended using modified bitumens for the roof membrane to improve durability and flexibility.
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