HTLA steels are susceptible to reheat cracking because they contain a lot of ()
A: carbides
B: H
C: S
D: P
E: 2-3-2
F: 期末
A: carbides
B: H
C: S
D: P
E: 2-3-2
F: 期末
举一反三
- HTLA steels are susceptible to reheat cracking because they contain a lot of () A: carbides B: H C: S D: P
- HTLA steels are susceptible to reheat cracking because they are with a lot of (). A: carbides B: hydrogen C: sulphur D: manganese
- ( ) cracking is generally encountered during postweld heat treatment (PWHT) of steels A: Reheat B: Stress relief C: Hydrogen induced D: Solidification
- 111.Cr (CO)6中的Cr原子采取的杂化轨道类型是 A: s p 3 d 2 B: d 2 s p 3 C: s p 3 d f D: s p 3 f 2
- 已知CaF2的Ksp=2.7×10-11，在pH =2.00时，其溶解度计算式为（ ）。 A: s=(Ksp)1/3； B: s=(Ksp/4)1/3； C: s=(Ksp•αF(H)2/4)1/3； D: s=(Ksp•αF(H)/4)1/3； E: s=(Ksp•αF(H)2/4)1/2； F: s=(Ksp)1/2； G: s=(Ksp/4)1/2。