After taking on fuel oil, the hoses should be disconnected and _____.

Can natural rubber be used in irrigation and drainage hoses？

Can natural rubber be used in irrigation and drainage hoses？ A: 正确 B: 错误

what is the purpose of the brake hoses in the brake system?（ ） A: they add friction B: they add flexibility C: they add air flow D: they add brake force

After taking on fuel oil, the hoses should be disconnected and （）. A: draped over the fantail to dry out B: drained over the side and washed out C: drained into the bilges and washed out D: drained into buckets or fuel tank