Iron ore can’t commonly be loaded with___.
A: conveyor belts
B: grabs
C: chutes
D: slings
A: conveyor belts
B: grabs
C: chutes
D: slings
举一反三
- According to the passage, how did Bessemer method make the mass production of steel possible A: It directed air at melted iron in a furnace, removing all impurities. B: It slowly heated iron ore then stirred it and heated it again. C: It changed iron ore into iron which was a substitute for steel. D: It could quickly find deposits of iron ore under the ground.
- The iron ore is one of the chief exports of( ).
- The main social services of the iron and steel industry system are the provision of iron and steel products and the consumption of iron ore A: 正确 B: 错误
- ( ) is not a kind of major bulk. A: iron ore B: phosphates C: bauxite D: cement
- Ore can be divided into and lean ore according to grade.