HTLA steels are susceptible to reheat cracking because they are with a lot of ().
A: carbides
B: hydrogen
C: sulphur
D: manganese
A: carbides
B: hydrogen
C: sulphur
D: manganese
A
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 contain a lot of () A: carbides B: H C: S D: P E: 2-3-2 F: 期末
- ( ) cracking is generally encountered during postweld heat treatment (PWHT) of steels A: Reheat B: Stress relief C: Hydrogen induced D: Solidification
- Compared with plain concrete beams, the ability of reinforced concrete beams to resist cracking is A: improved a little B: improved a lot C: totally the same D: None of the above
- The bioenergy is also called clean energy because it doesn't produce_________. A: exhaust gas B: oxygen C: hydrogen D: nitrogen
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Because of the Olympic Games . A: there has been a lot of new building B: a lot of new building has been planned C: a lot of new building was completed D: there was a lot of new building
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are very soft ,and can be used for bolts and for machine parts that do not need strength.: Alloy steels|High carbon steels|Low carbon steels|Medium carbon steels
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I prefer dogs to cats because they show me a lot of ______.
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In Summer, a lot of Australians will visit Bondi beach in Sydney, because _____.
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There is a lot of (pollute) ________in the air, because a chemical factory is near here.