现已上线！2025 年 Telegram 研究 — 年度关键洞察 
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The property of a material due to which it breaks with little permanent distortion is called :
The property of a material essential for spring materials is :
Which of the following property is desirable in parts subjected to shock and impact loads ?
The property of a material necessary for forgings, in stamping images on coins and in ornamental, work is
Which of the following property is desirable for material used in tools and machines ?
The property of a material which enables it to retain the deformation permanently, is called :
The ability of a material to resist fracture due to high impact loads is called
The weight per unit volume of a liquid at a standard temperature and pressure is called
The mass per unit volume of a liquid at standard temperature and pressure is called
