通常需要多年的行业内工作经验，以及高中或小型发动机或设备维修的大学课程的组合，才有资格获得行业认证。
A combination of several years of work experience in the trade and some high school or college courses in small engine or equipment repair are usually required for trade certification.
电器设备上的任何护罩，都应当保持完好，或及时维修。
All guards on electrical equipment should be kept in place and in good repair.
完成机械学徒课程，如磨粉机设计，加工，管道安装，汽车维修或重型设备维修。
Completion of a mechanical apprenticeship program, such as millwrighting, machining, pipelining, automotive service or heavy equipment repair.
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