...sts and Related Occupations 机械师和相关职业 724 Electrical Trades and Telecommunication Occupations 电子和电信行业技工 725 Plumbers, Pipefitters and Gas Fitters 管道工,管子工和煤气工 ..
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电气行业和电信职业(Electrical Trades and Telecommunication Occupations ) 管道工、 管子工和天然气滤波器(Plumbers, Pipefitters and Gas Fitters ) .
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