1.Lowering suction pressure in a compressor system will:
1.降低压缩机系统的吸气压力会：
2.The symbol illustrated in the figure identifies which piping line?
2.图中所示的符号标识的是哪条管道？
3.A horizontal furnace flue should rise at least:
3.水平炉烟道至少应上升：
4.To test for an overcharged refrigerant system, a technician would use a:
4.要测试制冷剂系统是否过充，技术人员会使用：
5.In a gas furnace, which component is unnecessary?
5.在燃气炉中，哪个部件是不必要的？
6.In a gravity furnace, registers should be located:
6.在重力式炉中，通风口应位于：
7.When shipped from the factory, fan motors are typically preset to which speed?
7.出厂时，风扇电机通常预设为哪个速度？
8.A compressor unloader cannot be operated by:
8.压缩机卸载器不能由以下哪种压力驱动？
9.When the red thermostat wire is joined to the white wire:
9.当红色温控器线连接到白色线时：
10.Proper belt-and-pulley tension should be determined from:
10.正确的皮带和皮带轮张力应根据以下哪项确定？
