1.To comply with ENERGY STAR® requirements, split-system air conditioners must meet a minimum SEER of___and an EER of ___.
1.为符合 ENERGY STAR®（能源之星）的要求，分体式空调系统必须达到至少 ___ 的 SEER 值和 ___ 的 EER 值。
2.Refrigerant chemicals are generally divided into two categories:
2.制冷剂化学物质通常分为两大类：
3.A return air system design that routes air back to the air handler from centrally located return points on each floor is called a ___.
3.一种将空气从每层楼的中心回风点引回至空气处理机组的回风系统设计，被称为 ___。
4.Once hot air cools down, it becomes ______.
4.热空气冷却后，会变得 ______。
5.The symbol displayed in the figure identifies a/an ___.
5.图中所示的符号代表的是 ___。
6.The boiling point of refrigerant R-12 is ______ °F.
6.制冷剂 R-12 的沸点是 ______ °F。
7.A typical air-conditioning system delivers approximately ___ cubic feet of air per minute for each ton of cooling.
7.典型的空调系统每提供一吨制冷量，大约输送 ___ 立方英尺/分钟的空气。
8.ASHRAE 34 provides standards used by the International Mechanical Code to classify ______.
8.ASHRAE 34 提供了《国际机械规范》（International Mechanical Code）所采用的标准，用于对 ______ 进行分类。
9.A residential heating system must be designed to maintain a temperature of ___°F measured ___feet above the finished floor throughout the conditioned space.
9.住宅供暖系统的设计必须确保在整个空调空间内，保持 ___°F 的温度，且该温度测量点位于距地面 ___ 英尺的高度处。
10.Refrigerants that have a high Btu cooling capacity are not necessarily ______.
10.具有高 Btu 制冷能力的制冷剂，未必是 ______。
