单项选择题
A.without first cooling it B.without first heating it C.without first unloading it D.without first loading it
Some （） lying in the starting air lines will give rise ...
单项选择题Some （） lying in the starting air lines will give rise to corrosion and can cause water hammer.
A.air B.moisture C.cooling water D.lubricant
During compressors running the accumulated moisture in ...
单项选择题During compressors running the accumulated moisture in the separators must be （）.
A.drained off B.collected C.sent to the crankcases D.separated with oil
By far the greatest use is for diesel engine starting u...
单项选择题By far the greatest use is for diesel engine starting using air pressure of 25 bar or more provided by （）.
A.rotary compressors B.reciprocating compressors C.centrifugal compressors D.screw compressors
