<kbd id="yq29u"><acronym id="yq29u"></acronym></kbd>

單項選擇題

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

你可能感興趣的試題

單項選擇題

Compressed air is used on board ship for all the following purposes except （）.

A.starting diesel engines
B.pneumatic control systems
C.pneumatic tools
D.supercharging air

單項選擇題

Low pressure air is usually taken through （） or pressure regulators to a low pressure reservoir supplying a ring main through driers.

A.globe valves
B.butterfly valves
C.gate valves
D.reducing valves