冲压加工的不安全因素有哪些？
开挖基坑时的放坡系数如何确定？
下列属于并购间接成本的是（） ["资产评估费","债务本息","重新注册费","谈判费用"]
以下哪一项不属于社会环境（） ["教育文化水平","信仰和价值观念","国家经济发展战略","自然资源与生态环境"]
Off hire is when a vessel breaks down，strands，or has any damage that prevents the working of cargo or delays the sailing of the vessel．Under which of the following charter parties is off hire most likely to be mentioned?（）. ["Bareboat","Voyage","Time","Lease"]
主梁金属结构的裂纹经常出现在什么部位？
