問題詳情
27. How should you signal the crane operator to STOP in an emergency?
(A) Extend arm with the palm down and hold this position rigidly.
(B) Place clasped hands in front of your body.
(C) Extend arm and move hand rapidly right and left with the palm down.
(D) Place both fists in front of the body with the thumbs pointing outward.
(A) Extend arm with the palm down and hold this position rigidly.
(B) Place clasped hands in front of your body.
(C) Extend arm and move hand rapidly right and left with the palm down.
(D) Place both fists in front of the body with the thumbs pointing outward.
參考答案
答案:C
難度:適中0.5
統計:A(1),B(0),C(3),D(0),E(0)
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