49. MC型主機氣壓遙控管路系統中,控制空氣屬於何區控制系統?
(A)STARTING LINE
(B)SPEED SETTING LINE
(C)AIR SOURCE
(D)SAFETY DEVICE
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統計: A(18), B(12), C(137), D(17), E(0) #3000348
統計: A(18), B(12), C(137), D(17), E(0) #3000348