再就业培训的确有效，尤其是在技术行业，但收益实现周期太长；
Retraining workers, particularly in technical fields, can be effective, but the benefits accrue slowly over time.
协助中心总监管理课程顾问的日常销售活动，以实现周期及月度销售目标。
Assist the Center Director in managing daily sales activities of Course Consultants to achieve period and monthly sales targets.
并进一步分析了滤波系统模型的周期性，探讨了实现周期滤波增益的可行性。
Further, the periodicity of the filtering system model is analyzed and the feasibility to realize periodic filtering gain is discussed.
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