How should you signal the crane operator to lower the boom and raise the load?
A
Extend arm and point finger in the direction to move the boom.
B
Extend arm with thumb pointing downward and flex fingers in and out.
C
With forearm vertical and forefinger pointing up, move hand in small horizontal circles.
D
With arm extended downwards and forefinger pointing down, move hand in small horizontal circles.
E
İlgili Sorular
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