Water evaporates or steam condenses at the saturation temperature, which depends upon the pressure, the higher the pressure （） the saturation temperature.

A （） boiler is an auxiliary boiler sometimes included i...

单项选择题A （） boiler is an auxiliary boiler sometimes included in a steamships installation for supplying steam to auxiliaries in port.

Between the steam dram and the smaller water dram below...

单项选择题Between the steam dram and the smaller water dram below, large numbers of smaller diameter （） tubes are fitted.

The safety valve should be （） in the presence of C/E an...

单项选择题The safety valve should be （） in the presence of C/E and Surveyor.