輪機工程(概要)（包括推進裝置、輔機與輪機英文）題庫下載題庫

上一題
39. Currnet changing in direction with rising and falling amplitude is _________ .
(A) AC (Alternating current)
(B) DC (Direct current)
(C) generator
(D) fresh water generator



39. Currnet changing in direction with r..-阿摩線上測驗