A.現(xiàn)場(chǎng)對(duì)時(shí)B.遠(yuǎn)程對(duì)時(shí)C.模擬對(duì)時(shí)D.廣播對(duì)時(shí)
A.采集服務(wù)器B.操作系統(tǒng)C.磁盤(pán)陣列D.GPS時(shí)鐘裝置
A.場(chǎng)強(qiáng)儀B.萬(wàn)用表C.抄控器D.功率計(jì)