【单选题】How many reasons for changing names are mentioned in the article?
【单选题】南通市通州区某企业每天的零星现金支付额为6 000元,根据银行规定,该单位库存现金的最高限额应为( )。
【单选题】将材料为45钢的齿轮毛坯加工成6级精度的硬齿面直齿圆柱外齿轮,该齿轮制造工艺顺序应是___________为宜。
【单选题】Can the scientist ______ [iks'plein] the reasons for changing the plan?
【简答题】Reasons for changing careers are different in nature, but many people move because they _____their current jobs and just want a change.