塔体吊装过程中,用钢丝绳制作跑绳时,安全系数应大于等于()。A、5 B、3 C、6 发布时间:2017-07-26 17:03 │ 来源:www.tikuol.com 题型:单项选择题 问题: 塔体吊装过程中,用钢丝绳制作跑绳时,安全系数应大于等于()。A、5B、3C、6D、4
题型:单项选择题 — Mr Smith wants to know whether you went to meet him at the station yesterday.— Yes. We______ in the station's waiting-room _____ evening. But he didn't show up. [ ]A. stayed; until B. didn't stay; untilC. stayed; not until D. not stayed; until 查看答案