电工行业认证国内和农村在纽芬兰，拉布拉多省和安大略省是强制性的。

Trade certification for electricians (domestic and rural) is compulsory in Newfoundland and Labrador and Ontario.

youdao

电工行业认证国内和农村在纽芬兰，拉布拉多省和安大略省是强制性的。

Trade certification for electricians (domestic and rural) is compulsory in Newfoundland and Labrador and Ontario.

youdao