The thermal expansion valve controls the amount of refrigerant that is allowed to flow to the （）. ["compressor","cooling coils","condenser","receiver"]
前払い读音正确的是（） ["ぜんはらい","ぜんばらい","まえばらい","まえはらい"]
试述配料调整对烧结的影响。
安価读音正确的是（） ["やすか","あんか","あいか","やすい"]
The compressor suction line conveys the refrigerant vapor from （） to （）. ["condenser；evaporator","evaporator；compressor","compressor；condenser","None of the above"]
简述杯体虫病（又称为舌杯虫）的防治方法。
