单项选择题
A.film B.cap C.lacquer D.shell
There is an injection pump for each cylinder, which is ...
单项选择题There is an injection pump for each cylinder, which is usually operated once every cycle by （） on the camshaft.
A.a gear B.a cam C.a rod D.a miler
There is a （） system lubricating the running gear and c...
单项选择题There is a （） system lubricating the running gear and cooling the piston and sometimes lubricating the cylinders.
A.recirculating B.total loss C.cooling D.refrigeration
There is （） in any water cooling system for a diesel en...
单项选择题There is （） in any water cooling system for a diesel engine allowing for expansion and water make-up in the system as well as air vent and chemicals addition.
A.a setting tank B.a service tank C.a head tank D.an expansion joint
