If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.

[单选题]The water level showing in a boiler water gauge glass is usually ( ) duringworking.A．higher than the actual drum water levelB．equal to the actual drum water levelC．increasing due to steam condensation in the glassD．lower than actual drum wafer 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

[填空题] LOW SURGE TANK AUX.WATER LEVEL表示（）。

[单选题]Diesel engine jacket water is used in the distillation process as the （）.A . coolant for the distillateB . coolant for the brine coolerC . means of heating the feedwaterD . primary means of producing a vacuum within the distiller

[单选题]Tammi Holmberg is enrolled to take the Level I CFA examination. While takin

[单选题]The enemy soldiers dropped bombs without aim and injured lots of civilians.A．at lengthB．in essenceC．in bulkD．at random

[单选题]“REDUCE SWING AS RAPIDLY AS POSSIBLE”IS THE MEANING OF（）.A .MIDSHIPSB .HARD-A-PORTC .STEADYD .STEADY AS SHE GOES

[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

[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

[名词解释] 快速进行性肾炎综合征(rapidly progressive nephritic sydrome)