锉刀按锉纹种类分,有() ["单齿纹锉、双齿纹锉","单齿纹锉、多齿纹锉","双齿轮纹锉、多齿纹锉","铣齿锉、剁齿锉"]
感官记忆。
采购标书中的投标有效期应保证到签约后()个工作日。 ["7-14","15-18","20-25","28-30"]
抗日战争时期,中共中央办公厅的组织机构包括() ["秘书处","保卫处","中央直属机关管理局","中央直属机关党委","特别会计科"]
杂志广告的优势是() ["拥有特定的阅读群体","受读者文化水平的限制","阅读注意度低","印刷不够精美"]
What is the function of the affective filter?