单项选择题
A.provide an area where air can separate from the oil B.provide an area to separate solid contaminants from the oil C.act as an oil and water separator D.absorb shocks occurring in the system
A reservoir, as used in hydraulic systems aboard ship, ...
单项选择题A reservoir, as used in hydraulic systems aboard ship, is used to store hydraulic oilAnother function is to（）
A.act as a shock absorber B.maintain the stored oil under pressure C.act as a base or foundation for the power unit D.eliminate pressure surges in the system
To prevent the unnecessary loading of an air conditioni...
单项选择题To prevent the unnecessary loading of an air conditioning system while maintaining the designed dry bulb temperature and relative humidity in an air conditioning system, you should （）
A.admit only enough fresh outside air to provide proper ventilation B.reduce the air reheating system load C.lower the compressor head pressure D.operate the purge recovery unit continuously
When air is at its dew point it is at its（）A.lowest abs...
单项选择题When air is at its dew point it is at its（）
A.lowest absolute humidity B.lowest relative humidity C.highest absolute humidity D.highest relative humidity
