将钢加热到A3或A1左右一定温度,保温后,缓慢(一般随炉冷却)而均匀冷却的热处理方法称为()。

A、淬火
B、退火
C、回火
D、正火
查看答案
正确答案:

B

答案解析:

暂无解析

上一题
你可能感兴趣的试题

Werefer___youletterofMay2.

EveryoneknowsthatChina’sBristlesareofsuperiorquality______thosefromothercountries.

A、with
B、to
C、for
D、than

We______theseminarsponsoredbyyouinSeptemberlastyear.

A、aware
B、awareof
C、areawareof
D、areaware

Peopleappreciate_______withhimbecauseheisknowledgeableandhumorous.

A、talking
B、talked
C、talk
D、totalk

Thevisitingministerexpressedhissatisfactionwiththetalks,________thathehadenjoyedhisstayhere.

A、havingadded
B、toadd
C、adding
D、added
热门试题 更多>
相关题库更多>
电焊工
高级焊工
中级焊工
初级焊工
试卷库
试题库