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單項(xiàng)選擇題

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

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單項(xiàng)選擇題

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

單項(xiàng)選擇題

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

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