题目: 饭店营销具有()、无形服务性 、()及缺乏灵活性等特点。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0831/41749dc25390f8595da12bac2a9e7a19.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:填空题 (1)燃烧需要的三个条件是①可燃物;②______;③达到燃烧所需的最低温度(也叫着火点).(2)浇水使火熄灭,原因是______.(3)从环保角度考虑,化石燃料、氢气、一氧化碳三类燃烧中最理想的是______. 查看答案
题型:单项选择题 In ship construction, frame spacing is().A.greater at the bow and sternB.reduced at the bow and sternC.uniform over the length of the vesselD.uniform over the length of the vessel, with the exception of the machinery spaces, where it is reduced due to increased stresses 查看答案