September 2018 1 237 Report
1.bagaimana proses terjadinya pelapukan yg d sebabkan oleh air?
2.mengapa pelapisan kayu dgn cat dapat mencegah proses pelapukan?
3.apa perbedaan paku yg sudah berkarat dgn paku yg masih baru?
4.jelaskan kerugian yg disebab kan perkaratan logam
5.apa yg di maksud dgn sifat lentur?

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