Topics of study include electricity, safety, wiring, blueprint reading, regulations, and more.

课程包括电，安全，写作，蓝图阅读，规章制度等。

youdao

Topics of study include electricity, safety, wiring, blueprint reading, regulations, and more.

课程包括电，安全，写作，蓝图阅读，规章制度等。

youdao