問題詳情
10. The current low-speed two-stroke marine propulsive diesel engine has widely adopted the__________ scavenging system that includes the use of air-spring for exhaust valve.
(A) loop flow
(B) return flow
(C) cross flow
(D) uniform flow
參考答案
答案：D
難度：適中0.666667
統計：A(0),B(0),C(1),D(2),E(0)