A.dirty delivery ducts
B.too much refrigerant
C.the fouling filters
D.high temperature outside
您可能感興趣的試卷
你可能感興趣的試題
A.a water cooled condenser
B.a slop tank
C.a expansion tank
D.a centrifugal pump
A.a centrifugal fan
B.a direct expansion cooler
C.a hermetic compressor
D.a centrifugal pump
A.central air conditioning system
B.high velocity system
C.low velocity system
D.single duct system
A.central air condition system
B.high velocity system
C.low velocity system
D.single duct system
A.mechanical energy
B.heat energy
C.potential energy
D.kinetic head
最新試題
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
If separating effect is not good, which measure should be taken （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
The cetane rating of diesel fuel is an indication of the （）
The main purpose of port State control is not to（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
The ISPS Code consists of a mandatory section-Part A, which shows（）