工作簿是 Excel 2007 中计算和存储数据的文件,扩展名为xlsx（）

此题为判断题(对，错)。

A、文件

B、表格

C、图形

D、文档

A) 工作簿  B) 工作表  C) 文档  D) 单元格

A．bark

B．barked

C．barking

D．barks

School buildings themselves can show liberal （） of a school cannot decide whether it has the conservative or liberal teaching practices. What determines whether the classroom is liberal or conservative is the spirit and attitude of the teacher.What of the following is implied in the passage?

A．In the newest teaching buildings, classrooms are much bigger．

B．In the schools of second generation, different grades were put in separate classrooms．

C．In the earliest school classrooms, students’ desks were fixed to the floor．

D．Before the mid-1950s, school buildings were built in a conservative way．

某机电安装公司承担北方某城市小区供热管网工程施工，开工前，项目经理进行了全面的质量策划，并指令专业工程师编制质量控制程序。工程按期完工，由于建设单位配套设施尚不具备条件，虽已到供暖期，没能进行试运。由于寒潮突然袭击，使当地气温骤降，随后检查发现一台主要设备和部分阀门冻裂，查找原因是因为施工单位水压试验后，残水没有排净造成的。施工单位按质量事故处理程序对事故进行了处理，并按以下六方面编写提交了事故处理报告：（）事故处理结论。主要设备和部分阀门冻裂是由于环境温度造成的，从质量预控角度分析，影响工程项目施工的环境因素包括哪几方面？本案例质量事故是什么因素造成的？