单选题When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.AArch the back to add strength to the musclesBBend his knees and lift with his legsCBend his back and stoopDBend his back and stoop with arms straight
单选题
When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
A
Arch the back to add strength to the muscles
B
Bend his knees and lift with his legs
C
Bend his back and stoop
D
Bend his back and stoop with arms straight
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