阿摩線上測驗
4. _________ is the process of removing exhaust gases from the cylinder after combustion
and replenishing the cylinder with fresh air.
(A) Compression
(B) Ignition
(C) Expansion
(D) Scavenging
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統計： A(182), B(36), C(98), D(661), E(0) #1854575
統計： A(182), B(36), C(98), D(661), E(0) #1854575
