首页/ 题库 / [单选题]为改善低碳钢的切削加工性应进行哪种热处理的答案

为改善低碳钢的切削加工性应进行哪种热处理(   )

单选题
2022-04-01 17:12
A、等温退火
B、完全退火
C、球化退火
D、正火
查看答案

正确答案
D

试题解析

相关题目
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing

A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.

为提高低碳钢的切削加工性,通常采用( )处理
球化退火主要用于高碳钢改善切削加工性。( )
所谓某种材料的切削加工性好坏,是相对于另一种材料而言的,一般在讨论刚料的切削加工性时,习惯以()为基准。
为改善材料的加工性能,可对低碳钢进行()处理。
改善低碳钢材料的切削加工性,可通过()处理。
OR的流行病学含义为()。
含碳量低于o’25%的碳钢,可用正火代替退火,以改善切削加工性能。
ORS液配制后的张力为()
含碳量低于0.25%的碳钢,可用正火代替退火,以改善切削加工性能。
改善材料的切削加工性的方法有:()。
改善材料切削加工性的措施有哪些?
()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.
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
广告位招租WX:84302438

免费的网站请分享给朋友吧