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47. 吊掛荷件時,吊舉角最好不要超過幾度(A)90(B)30(C)10(D)60。
問題詳情
47. 吊掛荷件時,吊舉角最好不要超過幾度
(A)90
(B)30
(C)10
(D)60。
參考答案
答案:D
難度:
簡單
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