施工承包单位中专业承包企业的资质分为( )。A.特级、一级、二级、三级 B.一级、 发布时间:2018-06-15 23:04 │ 来源:www.tikuol.com 题型:单项选择题 问题: 施工承包单位中专业承包企业的资质分为( )。A.特级、一级、二级、三级B.一级、二级、三级C.一级、二级、三级、四级D.一级、二级
题型:单项选择题 A small fuel spillage has occurred during helicopter refueling. After the leak has been stopped and fire-control personnel have been notified and are standing by,the next step is to().A.proceed with fueling operationB.have helicopter move to a safer locationC.wash spilled fuel away with a flood of waterD.clean spilled fuel with rags 查看答案