飞机结构技师行业认证是可用的，而在不列颠哥伦比亚省是自愿的。

Trade certification for aircraft structural technicians is available, but voluntary, in British Columbia.

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以河北科技师范学院为调查对象，探讨了“教考分合”考试模式结构。

Taking Hebei Normal University as the investigation object, the article discussed the mode structure of "integration and division of teaching and testing".

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