精加工后想提高加工表面硬度和耐磨性,可采用______热处理方法。A.调质 B.正火 发布时间:2017-06-28 14:30 │ 来源:www.tikuol.com 题型:单项选择题 问题: 精加工后想提高加工表面硬度和耐磨性,可采用______热处理方法。A.调质B.正火C.淬火D.渗氮
题型:单项选择题 76. I have no about me now. Let’s go to a bank nearby for the big note .A.copyB.chanceC.chargeD.Change 查看答案
题型:单项选择题 下面程序段执行结果为 x=Int(Rnd() +4) Select Case x Case 5 Print "excellent" Case 4 Print "good" Case 3 Print "pass" Case Else Print "fail" End SelectA.excellentB.goodC.passD.fall 查看答案