Motor-grader operators who are maintaining roads but want to climb to the top levels of the earthmoving profession — to become finished-grade operators — can practice the skills they need by taking ...
Motor graders have traditionally been one of the most difficult pieces of equipment to master, but manufacturers have incorporated technology to make operation easier and increase production and ...
Their gross motor skills, which involve whole-body movement, are fully developed by this age, although they will continue to be refined over the next few years. The same applies to fine motor skills, ...
当前正在显示可能无法访问的结果。
隐藏无法访问的结果