A、main stem stop valve
B、auxiliary steam stop valve
C、feed check or control valve
D、blow down valve
更多“The（）enables water to be blow down or emptied from the boilerIt may be used when partially or completely emptying the boiler.”相关的问题
A、on the sailing, the water in the aft peak tank should be excluded as much as possible B、the stuffing style ahead sealing shouldn’t have any water leaking out C、Simplex astern sealing shouldn’t have any oil leaking out D、Simplex ahead sealing can have some oil leaking out
A、is usually cooled by sea water B、can be replaced when worn out C、is in direct contact with the water in the bore of the cylinder D、can t expand when heated
A、depth of water at a specific time due to tidal effect B、difference between the depth of the water and the area's tidal datum C、difference between the depth of the water and the high water tidal level D、difference between the depth of the water at high tide and the depth of the water at low tide
A、5 times the depth of the water in good holding ground B、10 times the depth of the water in shallow water C、2 times the depth of the water in poor holding ground D、8 times the depth of the water in deep water
A、an oil content meter B、an oil checker C、an analyzer of oil content D、a mixer of oily water
A、vaporize, with the un-flashed water remaining at the temperature at which it entered the flash chamber B、vaporize, with the un-flashed eater equalizing to the saturation conditions existing in the f lash chamber C、vaporize, with the remaining water a t a temperature greater than it entered the flash chamber D、boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber
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