A.45% B.55% C.65% D.75%
A.30° B.45° C.60° D.90°
A.機(jī)油壓力降低 B.柴油機(jī)輸出功率降低 C.柴油機(jī)降低排氣噪音 D.壓氣機(jī)喘振