Have you ever wondered...How is a car designed?what keeps a helicopter in the sky?How fast is a bullet train?Which is the biggest ship?How is submarine kept watertight?
發表於2025-02-05
Transport(Questions & Answers)(問與答係列: 運輸) 2025 pdf epub mobi 電子書 下載
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Transport(Questions & Answers)(問與答係列: 運輸) 2025 pdf epub mobi 電子書 下載