A.50%~100% B.15%~100% C.25%~100% D.75%~100%
A.膨脹閥 B.單向閥 C.滑閥、油缸活塞 D.油缸活塞
A.膨脹閥 B.蒸發(fā)壓力調(diào)節(jié)閥 C.單向閥 D.滑閥