7.下列有關淨油機中比重盤號數和油水界面之關係，何者敘述正確？(A)比重盤號數愈小，使得油水界面內移 (B)比重盤號數愈小，使得油水界面外移 (C)比重盤號數愈大，使得油水界面內移 (D)比重盤號數和
11.下列何種起貨機於要求定額出力及輕負荷高速時均具有優良特性？(A)Ward Leonard交流電動起貨機 (B)三相複合整流子型交流電動起貨機 (C)極數變換式交流電動揚貨機 (D)電動油壓揚貨機
14.The lubricating-oil employs the centrifugal force to remove very small particles from thelubricat
21.A device installs in a diesel engine with the attempt to increase the power output of an engine o
22.For a reaction type of steam turbine, which device is used to counteract the sizable axial forceg
23.An ejector’s performance can be rated based on the ratio of the pressure at the discharge portdiv