A. a sounding pipe
B. crankcase
C. air vent
D. the manhole of the sump tank
[单选题]A level gauge for a tank is to ().A . give the pressureB . give the contentsC . give the shape of the tankD . give the accuracy level
[单选题]The water level in the gauge glass when a boiler is operating is _____ when the boiler is shut down.A.lower thanB.higher thanC.belowD.equal to
[单选题]A diesel engines crankcase oil level is found to be too high√ You should suspect that ().A . the engine was over filledB . there might be a fuel leakC . there might be a water leakD . all of the above
[单选题]C.an you measure oil level? Which method is right, to measure ullage height or to measure oil depth?
[填空题] LOW OIL LEVEL COMPR CRANKCASE LSLL-731表示()。
[单选题]当滑油量低于多少时出现“LOW OIL LEVEL”闪烁指示,这时需要给APU加滑油()A . 3.9夸脱;B . 4.9夸脱;C . 5.9夸脱。
[判断题] 在IS-IS协议中,Level-2路由器维护Level-1和Level-2的链路状态数据库,因此它拥有整个路由域的网络拓扑信息。()A . 正确B . 错误
[单选题]ECAM警告信息中,level2和level1有何区别?()A . 无区别B . level2比level1后退一格C . level1比level2后退一格D . level2的有单语音,level1的无音响警告
[单选题]_______means the level for which appropriate additional protective security measures shall be maintained for a period of time as a result of heightened risk of a security incident.A.Security level 1B.Security level 2C.Security level 3D.Security level
[单选题]gray level differentiation是()A . 线分辨力B . 灰度分辨力C . 穿透力D . 空间分辨力