实验室中有一种瓶子专用于测定液体密度，这种瓶子叫密度瓶．若瓶子的质量是10克，装 发布时间：2017-06-10 12:03 │ 来源：www.tikuol.com 题型：问答题 问题： 实验室中有一种瓶子专用于测定液体密度，这种瓶子叫密度瓶．若瓶子的质量是10克，装满水后，水和瓶子的质量是20克．装满油后，油和瓶子的质量是18克．求这种油的密度？
题型：问答题 选出能填入空白处的最佳选项。A. But if I don't go now, it will be too late to play football with the others. B. If you let me go out, I will finish it later. C. What would your father say if you came out at the bottom of the class again? D. I wouldn't mind if I didn't. E. He would be more pleased if you came top. (Tom has just come from school. He is talking to his mother.) Tom: Can I go out and play now? Mother: If you have finished your homework. Tom: 1. _____ Mother: Oh no! Just sit down and finish it now. You'd never do any if I didn't make you, would you? Tom: Yes, I would. 2 _____Mother: Never mind about football. You will never do well at school if you don' you're your homework. Tom: 3 _____ Mother: Well, we would. 4 _____ Tom: I don't know. But just think how pleased he'd be if I got on the football team. Mother: 5 _____ Tom: He says he would play football all day if he were my age again. 1._____ 2._____ 3._____ 4._____ 5._____ 查看答案
题型：问答题 下列关于软件测试风险分析的说法中，错误的是______。A．任何项目都存在风险，软件测试也不例外B．风险管理可分为风险评估和风险控制，风险评估又可分为风险识别和风险分析C．风险是指已经发生了的、给项目成本、进度和质量带来坏的影响的事情D．风险识别和分析后，就可以指定对应策略和对应的风险管理计划了 查看答案
题型：问答题 《实验动物许可证管理办法（试行）》制定实验动物的行政许可管理和实验动物许可证管理的具体规定的依据是（）。A.《实验动物质量管理办法》B.《实验动物管理条例》C.实验动物的国家标准D.实验动物管理法规标准体系 查看答案