题目内容

For the following statement about the adjustment method of the time relay, ( ) are correct. ① when adjusting, generally only adjust according to the value indicated on the dial; ② when adjusting, increase the delay time by clockwise direction; ③ when adjusting, increase the delay time by counterclockwise direction; ④ the sets must be verified after adjustment

A. ①②
B. ②③
C. ②④
D. ③④

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