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How should you signal the crane operator to use the main hoist? |
A) Extend arm with the thumb pointing up and flex the fingers in and out for as long as the load movement is desired. |
B) First tap your elbow with one hand, and then proceed to use regular signals. |
C) Use one hand to give any motion signal, and place the other hand motionless in front of the hand giving the motion signal. |
D) First tap the top of your head with your fist, and then proceed to use regular signals. |
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