...了保证游客安全 » In order to ensure the safety of tourists 能够熟练掌握专业知识 » Proficiency in Professional Knowledge 宁可慢些，不要太急而错误；宁可笨些，不要太巧而败事 » Rather slowly, not too fast and error; some rather stupid, do not b...
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能够熟练掌握专业知识 » Can master professional knowledge 3.新旧设备、自有资金的免表的办理，进口设备机电证、预检验的办理 » 3 them.
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