1.BER (Building Energy Rating) information can be obtained through:
1.建筑能源评级（BER）信息可通过以下途径获取：
2.EPA Type I certification permits servicing of:
2.EPA I 类认证允许对以下设备进行维修：
3.Proper HVAC system maintenance is not possible unless air ______ is balanced throughout all conditioned spaces.
3.除非所有空调空间内的空气 ______ 达到平衡，否则无法进行恰当的 HVAC 系统维护。
4.The highest air temperature blown from a furnace should not exceed:
4.燃气炉吹出的最高空气温度不应超过：
5.The best insulating material is:
5.最佳的绝缘材料应具备以下特性：
6.Strainers should be located where ______ can be easily removed for maintenance.
6.过滤器（Strainers）应安装在便于拆卸其 ______ 以进行维护的位置。
7.Natural gas typically provides how much heat energy per cubic foot?
7.每立方英尺天然气通常能提供多少热能？
8.Over 75% of dry air consists of:
8.干燥空气中超过 75% 的成分是：
9.Rotary brushes powered pneumatically or ______ are used to loosen debris in ducts.
9.气动或 ______ 驱动的旋转刷常用于松动风管内的碎屑。
10.What is the approximate voltage output of a thermopile device?
10.热电堆装置的电压输出大约是多少？
