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过冷奥氏体是指冷却到（ ）温度下，尚未转变的奥氏体。
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过冷奥氏体是指冷却到（ ）温度下，尚未转变的奥氏体。
A、Ms
B、Mf
C、A17
D、以上都不对
时间：2021-09-01 20:52
关键词：
联大
河南理工大学
机械设计制造及其自动化
金属工艺学
答案解析
B
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过冷奥氏体是指冷却到（ ）温度下，尚未转变的奥氏体。
钢过冷奥氏体冷却的方式包括等温冷却和连续冷却。( )
将钢通过加热、保温和冷却，使过冷奥氏体转变为贝氏体组织的工艺称为淬火工艺。（）
CASE OF DEATH OR SERIOUS INJURY TO A PERSON IN AN ACCIDENT OR SHIPPING DISASTER is（）.
Mainly east 3 or 4 partly cloudy to overcast occasional rain（）slowly south moderate or good.
（）any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local quarantine officer must be notified immediately．
Should any case or suspected case of quarantinable disease，or any case of eruptive disease or any death be discovered，the local Quarantine Officer must be（）immediately.
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