单项选择题 听力原文：M: Mom, may I play the computer games for a while?W: Behave yourself! Dad is in the study.Q: What does the mother ask the child to do?(15)A．To go to the study.B．To play computer games.C．To ask for his father's permission.D．To be quiet and not to disturb his father.

未知题型 根据《房屋建筑与装饰工程工程量计算规范》，下列装饰装修工程量计算，可以按长度计算的是（ ）。

单项选择题 大跨度屋盖结构的吊装方法不包括（）。