The inner part of the condenser should be cleaned with （）.

Which component is the heart of the air condition<br/>system __? A: Receiver B: Compressor C: Condenser D: Metering device

When large decrease in turbine load the steam from the steam generators is sent to the A: steam condenser B: atmosphere C: steam dump system D: heat exchanger

In a refrigeration system, if the cooling water to the condenser fails, the（）. A: box temperature solenoid valve will close B: expansion valve will close C: compressor will shutdown D: king valve will ope