Originally, E.U was only limited to coal and steel.
举一反三
- High-speed steel is also___________________(know) as self-hardening steel.
- Steel structure involves sub-structure or members in a building made______ structural steel.
- 3. Which two countries started the talking about steel and coal?
- ( ) is not a real coal, but only a precursor.
- ( ) is not a real coal, but only a precursor. A: Anthracite B: Bituminous coal C: Lignite D: Peat