稳定化处理适应于哪种类型的不锈钢？
参考答案：
稳定化处理一般适用于18—8型含钛或铌等稳定化元素的不锈钢。
Last year my old college friend Melissa _________ her family business, a company supplying metal boxes to other factories.
A．took up
B．took down
C．took off
D．took over
FOCKE350小盒包装机内衬纸拉头故障原因是（）不完整或不存在。
