举一反三
- The specific meaning of the terms "reinforced concrete and prestressed concrete" are ______ .
- concrete
- Reinforced concrete has steel bars that are placed in the concrete to carry tensile forces.
- The common failure characteristic for the large and small eccentrically compressed reinforced concrete members is that the concrete in compression zone reaches the concrete ultimate compressive strain at the failure.
- precast concrete
内容
- 0
concrete structure
- 1
Which statement is NOT correct about concrete words?? Concrete words are words that you can see, feel, hear, smell, touch and taste.|none of the above|“Honesty,” “pride,” and “patriotism” are concrete words.|Concrete words refer to tangible objects—people, places, and things.
- 2
The following statement is true? A: Pouring concrete can have help surface B: Miring concrete should be used in 40 minutes C: Each payment before concrete pouring needs to be signed by the engineer D: The concrete must be used is minutes after unloading
- 3
The cause of cracks in concrete are: stress due to applied （） and stress due to temperature or （） change when concrete is restrained。
- 4
12. The effort spent on careful ______ , mixing and compaction of concrete will be largely wasted if the concrete is badly cured (养护).