题目
非标准货物系固操作方法正确的是_。circled 1为提高系固效果,系索越紧越好; circled 2系索应前后左右对称布置; circled 3每个生根的地令上不能超过三根系索,且方向不能相同; circled 4为防止货件水平移动,垂直系固角应尽可能大于45^ circ / A. circled 1~ circled 4B. circled 2 circled 3C. circled 1 circled 2 circled 4D. circled 2 circled 3 circled 4
$$ 非标准货物系固操作方法正确的是\_。\textcircled 1为提高系固效果,系索越紧越好; \textcircled 2系索应前后左右对称布置; \textcircled 3每个生根的地令上不能超过三根系索,且方向不能相同; \textcircled 4为防止货件水平移动,垂直系固角应尽可能大于45^ \circ / $$
A. \textcircled 1~ \textcircled 4
B. \textcircled 2 \textcircled 3
C. \textcircled 1 \textcircled 2 \textcircled 4
D. \textcircled 2 \textcircled 3 \textcircled 4
题目解答
答案
B. \textcircled 2 \textcircled 3