题目: 发生空接事故,导游人员应立即与本社有关部门联系,查明原因。( ) 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0324/aaeaa731670e0c005c0db39c7ad5d2aa.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:选择题 ______ I made a speech in front of so many people, I felt quite nervous. A.The first timeB.For the first timeC.At that timeD.At the first time 查看答案
题型:选择题 用溶质的质量分数为98%的H2SO4(密度为1.84g/cm3)来配制44mL 20%的H2SO4(密度为1.14g/cm3),需要98%H2SO4的体积是( )A.1.8mLB.5.6mLC.7.8mLD.10.2mL 查看答案