单选题 Because the electronic governor（电子调速器）controller is a sensitive piece of electronic equipment and should not be mounted on the engine or in areas where it will be exposed to____.①vibration（振动）;②humidity（湿气）;③high temperatures;④oxygen
2026-01-08
共100道
相关试题
单选题 In a diesel engine cooling water system, a pH of 6.0 indicates a/an____.
单选题 During the period of the preparations for ME（main engine ）stand-by , pump up the air reservoirs(空气瓶)to their ____pressure and drain the air reservoirs and air system.
单选题 ____are large, especially tall , heavy and operate on the two-stroke cycle.
单选题 Crank chamber（=crank case）oils must be able to remove heat from a bearing and to do so the ____should be high enough at operating temperatures to assist（帮助，协助，assistant:助手）film（油膜）maintenance.
单选题 If a crankcase explosion（曲轴箱爆炸）occurs in a diesel engine, which of the listed ____actions should be taken?
单选题 ____is taken to check power and pressure in cylinders.
单选题 Accurate ____ between bedplate and cylinder block is essential to effective stress transmission and engine operation.
单选题 Jacket cooling water systems forms a/an ____circuit（回路，电路，水路）. vs: current:电流
