The
heat treatment process (such as annealing, normalizing, etc. ) to
improve the cutting performance of materials is usually arranged in
().
A: After machining
B: Before grinding
C: Before cutting
D: After roughing and before finishing
heat treatment process (such as annealing, normalizing, etc. ) to
improve the cutting performance of materials is usually arranged in
().
A: After machining
B: Before grinding
C: Before cutting
D: After roughing and before finishing
C
举一反三
- ____is<br/>a low-temperature heat treatment used to eliminate all or part of the<br/>effect of cold working in steels. A: Normalizing B: Spheroidizing C: Annealing D: Process<br/>annealing
- To improve the machinability of low carbon steel, the heat treatment process usually used is ( ) . A: quenching B: tempering C: annealing D: normalizing
- The time for export inspection should be(<br/>) A: before<br/>preparing goods B: after<br/>export clearance C: before<br/>export clearance D: after<br/>shipment
- Where is the Acknowledgements usually found in scientific paper? A: After the references. B: Before the references. C: After the results. D: Before the abstract.
- The principles for machining sequence of each surface should be( )<br/>and perform rough machining before finish machining. A: perform datum surface machining before that of other surfaces B: perform main functional surface machining before less important surface machining C: perform plane surface machining before hole surface machining D: perform complex surface machining before simple surface machining
内容
- 0
【单选题】()4. ______ A. Was; before B. Is; before C. Was; after D. Is; after A. was before B. is before C. was after D. is after
- 1
We need to<br/>brush our teeth ___ we sleep. () A: before B: after
- 2
＿＿＿＿your father at work the day＿＿＿yesterday﹖ A: Was; before B: Is; before C: Was; after D: Is; after ．
- 3
（）your father at work the day（）yesterday. A: Was; before B: Is; before C: Was; after D: Is; after
- 4
It is physically possible for your mother to leave Earth after you were born and return() A: younger<br/>than she was when she left B: before<br/>you were born C: before<br/>she was born D: older<br/>than she was when she left