In the experiment， the East Asian volunteers had difficulties distinguishing between fear and surprise because__________. 查看材料

未分类题The Asian volunteers may have focused on the eyes because__________. 查看材料

未分类题The pair of words 'receive give is called

未分类题X: He likes dogs.Y: He likes animals.The relationship of X and Y is that

未分类题According to Bartlett， reflective teaching includes five stages， that is， mapping， informing and three other stages EXCEII'

单项选择题甲公司是一家机械加工企业，有职工52人，配备了1名兼职安全生产管理人员钱某，并委托具有安全评价资质的乙公司提供安全生产管理服务，乙公司向甲公司派遣了注册安全工程师丁某。依据《安全生产法》，保证甲公司安全生产责任的是()。