The signal man assisting the crane operator has his forearm vertical, forefinger pointing up, and moves his hand in a small horizontal circle. This is the signal to __________.
A
swing
B
lower
C
hoist
D
extend
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Question 1 / 2066636ee728f7522a1c518938
Question 1 of 2066636ee728f7522a1c518938
The signal man assisting the crane operator has his forearm vertical, forefinger pointing up, and moves his hand in a small horizontal circle. This is the signal to __________.
The signal man assisting the crane operator has his forearm vertical, forefinger pointing up, and moves his hand in a small horizontal circle. This is the signal to __________.