国家规定的标准 state specified standards 工伤保险制度 the on-job injury insurance system ..
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state-specified standards 国定标准
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Licensing standards vary by state and occupation, but typically require a minimum level of education in a specified field and a passing score on a test of competence.
FORBES: A Use For The Commerce Clause: Increasing US Labour Mobility Through Occupational Licensing
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