空调系统试运行调试方案中技术依据不包括（）。
A、国家现行有关标准和规范
B、采用的工艺标准
C、工程规模
D、设备技术说明文件
参考答案：C
如图中的黑色部分表示四种动物共有的特点．则该特点是（ ）
A．卵生
B．用肺呼吸
C．体温恒定
D．具脊椎骨连接而成的脊柱
Tom was a student at this university from 1999 to 2003, ____ he studied very hard and was made
Chairman of the Students' Union. [ ]
A. for which time
B. during which time
C. during whose time
D. by that time
