Can natural rubber be used in irrigation and drainage hoses？
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- Can natural rubber be used in irrigation and drainage hoses？
- Natural rubber usually is much stronger and harder than vulcanized rubber. A: 正确 B: 错误
- What is the unique system of underwater irrigation and drainage in Xinjiang Province?
- Posters can be used for advertising. A: 正确 B: 错误
- what can be used as fuel for automotive engine?() A: Natural gas B: diesel C: propane Gasoline D: Gasoline