吊装桥梁构件时,吊绳与起吊构件的交角应大于( ),否则应设吊架或扁担,尽可能使吊环 发布时间:2017-12-10 12:23 │ 来源:www.tikuol.com 题型:单项选择题 问题: 吊装桥梁构件时,吊绳与起吊构件的交角应大于( ),否则应设吊架或扁担,尽可能使吊环垂直受力。A.45°B.60°C.90°D.75°
题型:单项选择题 Fair and (73) competition in government procurement around the world is good business and good public policy.Competitive pricing,product (74) and performance improvements result from competitive practices and help ensure that government authorities get the best (75) for the public they serve.A.recessionB.innovationC.crisisD.ability 查看答案