增建或改建框构、刚构桥时,其混凝土强度等级不小于()。A、C30 B、C35 C、C 发布时间:2017-07-25 05:41 │ 来源:www.tikuol.com 题型:单项选择题 问题: 增建或改建框构、刚构桥时,其混凝土强度等级不小于()。A、C30B、C35C、C20D、C25
题型:单项选择题 You are handling a mooring line and are instructed to Check the line.What should you do().A.Ensure the bight is not fouled by taking up slackB.Pay out the line smartly and keep it free for runningC.Secure the line by adding more turnsD.Surge the line so it maintains a strain without parting 查看答案