铁素体是碳溶解在()的间隙固溶体。 ["A、D—Fe","B、α—Fe","C、z—Fe","D、p—Fe"]
作为一个企业的员工,应该做到爱岗敬业,(),有了爱心才会有热情,有了热情工作才能做的更好. ["A、遵纪守法","B、埋头苦干","C、热爱本职工作","D、不迟到早退"]
奥氏体冷却到()开始析出珠光体。 ["A、420oC","B、148oC","C、727oC","D、127oC"]
()焊件焊缝内部缺陷常用超声波检验来擦测。 ["大厚度","中厚度","薄","各种"]
特级质量钢的含磷量≤0.025%,含硫量≤()。 ["A、0.075%","B、0.5%","C、0.015%","D、0.1%"]
水轮机出力