正确答案: A

最高工作水位

题目：对烟管锅炉，点火前应上水至水位计的()。

解析：A

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举一反三的答案和解析：

[单选题]_________ is a little oil in the tank

There

[单选题]UMS are mainly unattended overnight and during this time ____ should have control of the main engine

the bridge officer on watch

[单选题]The( )in the injector will lift at a pre-set pressure which ensures that the fuelwill atomize once it enters the cylinder.

needle valve

解析：解析：atomize：雾化

[单选题]在狭水道航行中，利用航线前方导标方位导航，航行中发现导标的方位小于导航线方位，应用：()

小舵角左转

[单选题]船舶检修分工明细表规定，舱底水分离设备的检修负责人是_____

三管轮

[单选题]船尾失火的警报信号是一阵乱钟后，再去鸣______。

3声