阿摩線上測驗
34. What is the measure to indicate whether the piston rings and valves are sealing tightly？
(A) Scavenging pressure
(B) Maximum cycle pressure
(C) Mean effective pressure
(D) Compression pressure
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統計： A(125), B(168), C(131), D(560), E(0) #1767604
統計： A(125), B(168), C(131), D(560), E(0) #1767604
