8. The working fluid employed as the heat absorber in any refrigerating process is called as
__________.
(A) heating
(B) recycle
(C) refrigerant
(D) renew
30. What are the speeds of the rotors that shall be carefully calculated in order to avoid the
resonance at normal running speeds?
(A) Exciting speeds
(B) Virtual speeds
(C) Critical speeds
(D) Damping speeds
22. 下列何者適用於表達「啟動循環泵」的意思?
(A) Starting central pump
(B) Start up the circulating pump
(C) Starting the centrifugal pump
(D) Start up the compressive pump