11 concrete/metal railings ____
举一反三
- Concrete can be made stronger under tension by adding metal rods, wires, mesh or cables to the composite.( )
- 11、It is widely approved that any civilization could not originate or survive without .A、animal bonesB、riversC、ropesD、metal
- Which of the following is the mostly used type of concrete pavement? A: Jointed plain concrete pavement (JPCP) B: Jointed reinforced concrete pavement (JRCP) C: Continuously reinforced concrete pavement (CRCP) D: Prestressed Concrete Pavements (PCP)
- The specific meaning of the terms "reinforced concrete and prestressed concrete" are ______ .
- 18. It's in the ________ container. A: large blue metal B: blue large metal C: blue metal large