举一反三
- 中国大学MOOC: Which of the following can be thought as positive reinforcements?
- Which is not the function of the matrix in a fiber-reinforced composite? ____ A: Is the principal load-carrying member B: Keeps fibers in the desired location and orientation C: Acts as a load transfer medium D: Protects fibers from environmental and processing damages.
- Which is not the function of the matrix in a fiber-reinforced composite? A: the principal load-carrying member B: keeps fibers in the desired location and orientation C: acts as a load transfer medium D: protects fibers from environmental and processing damages
- Which is not the function of the matrix in a fiber-reinforced composite? A: the principal load-carrying member B: Keeps fibers in the desired location and orientation C: Acts as a load transfer medium D: Protects fibers from environmental and processing damages
- In the calculation of the bearing capacity of the normal section of a doubly reinforced concrete rectangular beam, if [img=63x27]1803b9532781df8.png[/img], it indicates that ( ). A: the compressive reinforcements will not yield B: the tensile reinforcements will not yield C: the section is over-sized D: the compressive reinforcements have already yielded when the failure of the beam occurs
内容
- 0
The main reason why spiral stirrups can improve the bearing capacity of the normal section of axial compressed columns is that ( ). A: the strength of spiral stirrups is high B: spiral stirrups can effectively restrain the longitudinal reinforcements and improve the compressive strength of longitudinal reinforcements C: spiral stirrups can effectively restrain the core concrete and improve its compressive strength D: spiral stirrups have strong deformation capacity
- 1
The arrival of reinforcements turned the _____in our favour.
- 2
The distributed reinforcements in the slab should be perpendicular to the stressed reinforcements.
- 3
The most effective measure to avoid the inclined compression failure for a beam is by ( ). A: increasing the amount of stirrups B: increasing the section size C: increasing the amount of web reinforcements D: increasing the amount of bent-up reinforcements
- 4
Metal reinforcements will be used as a ______ measure until a new wall can be built. A: (A) virtual B: (B) temporary C: (C) standard D: (D) recent