Unit 1Are you ready for a job interview?Unit 2Can you read technical descriptions?Unit 3Can you read user manuals?Unit 4Do you have safety habits?Unit 5Do you recognize the signs?Unit 6Do you know how to replace a GFCI?Unit 7Are you skilled at wiring?Unit 8How should you deal with an electric shock?Unit 9Can you lift heavy things safely? '
以下为对购买帮助不大的评价