桥式起重机小车于跨中起吊额定载荷主梁跨中的下挠值不得超过跨度的。A、1/700 B、 发布时间:2017-10-24 19:25 │ 来源:www.tikuol.com 题型:单项选择题 问题: 桥式起重机小车于跨中起吊额定载荷主梁跨中的下挠值不得超过跨度的。A、1/700B、1/750C、1/800
题型:单项选择题 His letter was so confusing that I could hardly make any of it.A.explanationB.senseC.meaningD.guess 查看答案
题型:单项选择题 If laid out in______straight line,______human digestive tract would measure approximately thirty-foot long.A.a...theB./...theC.the.../D.the...a 查看答案