31. 拆開一號主空壓機進口閥&排出閥檢查 Dismounted suction valves & delivery valves from No.1 main air ________ for inspection.
(A) reservoir
(B) compensator
(C) condenser
(D) compressor

答案：登入後查看
統計： A(10), B(33), C(30), D(458), E(0) #1333517