液压传动有什么优点?
下面属于消费者购买动机的是:() ["求实动机","追求时尚","求美动机","模仿","求便动机"]
厂内机动车辆的登记证书、号牌、操作证的式样由国务院()部门规定并监制。 ["A、公安","B、农机","C、质量技术监督"]
影响品牌选择和产品购买数量的店内因素是:() ["购物点陈列","削价与促销","店内气氛","商品脱销","销售人员"]
驾驶厂内机动车辆行驶,作业时应随身携带()。 ["A、驾驶证","B、操作上岗证","C、身份证"]
使用液压千斤顶的注意事项是什么?