单项选择题
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
The working cycle of a four-stroke diesel engine consis...
The working cycle of a four-stroke diesel engine consists of four events:（） (1) compression (2) expansion (3) exhaust (4) suctionThe correct sequence is
A.(4)-(2)-(3)-(1) B.(4)-(3)-(1)-(2) C.(4)-(3)-(2)-(1) D.(4)-(1)-(2)-(3)
