After annealing treatment, the hardness of steel ____and the plasticity ____ ()
A: Decreases / increases
B: Increases / decreases
C: Is reduced / decreases
D: Raises/ is improved
A: Decreases / increases
B: Increases / decreases
C: Is reduced / decreases
D: Raises/ is improved
举一反三
- In the labor market, an increase in labor productivity ________ the real wage rate and ________ the level of employment. A: raises; increases B: raises; decreases C: lowers; increases D: lowers; decreases
- With the increase of pressure altitude, . A: thrust increases, drag increases, thrust minus drag increases B: thrust decreases, drag decreases, thrust minus drag increases C: thrust decreases, drag decreases, thrust minus drag decreases D: thrust decreases, drag decreases, thrust minus drag does not change
- When the interest rate falls in the money market, the quantity of money demanded ________ and the quantity of money supplied ________. A: increases; decreases B: decreases; increases C: stays the same; decreases D: increases; stays the same
- Under a certain long-term load, concrete would creep. In the reinforced concrete axial compressive members: A: Creep increases the compressive stress of concrete. B: The compressive stress of concrete and steel bar keeps unchanged. C: Creep decreases the compressive stress of concrete and increases the compressive stress of steel bar. D: Creep increases the compressive stress of concrete and decreases the compressive stress of steel bar.
- When bond interest rates become less volatile, the demand for bonds _________ and the interest rate _________. A: increases; rises B: increases; falls C: decreases; falls D: decreases; rises