桥式起重机中,桥架的主要损伤形式是()。 A.磨损 B.疲劳 C.过热 D.腐蚀 发布时间:2017-05-10 12:40 │ 来源:www.tikuol.com 题型:单项选择题 问题: 桥式起重机中,桥架的主要损伤形式是()。A.磨损B.疲劳C.过热D.腐蚀
题型:单项选择题 —Would you please give this Mp3 to Mary. —Sure, I'll give it to her _______ she comes back. [ ]A. before B. as soon as C. till 查看答案