评定混凝土强度式件的规格是()
0 阅读
评定混凝土强度式件的规格是()
- A: 70.7mm*70.7mm*70.7mm
- B: 100mm*100mm*100mm
- C: 50mm*50mm*50mm
- D: 150mm*150mm*150mm
请帮忙给出正确答案和分析,谢谢!
搜题,就来89问答库