The main function of tie rods in the construction of large, low speed diesel engines is to（）.
One method of constructing large marine diesel engines and reducing the total engine frame weight is through （）.
Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the （） and a recirculation system lubricating the running gear and cooling the piston.
Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.
Turbocharging of marine diesel engine is achieved by two distinct methods, （） termed the constant pressure and the pulse system.
The development of （） has kept pace with the increasing demands made by the steady rise in power produced by modem marine diesels.
One of the purposes for water cooling the exhaust manifold in marine diesel engine is to （）
Cast iron pistons used in large propulsion diesel engines are constructed with （）
A viscous damper, as used on a marine diesel, is a sealed precision built device which dampens the torsional vibrations in the （）.
The following preparations are essential for any （） of marine diesel engine before it may be started.
（） providing lubricating films, oil used in marine diesel engines have to remove heat from oil cooled piston.
Lubricating oil is supplied to the crank-pin bearings in a marine diesel engine by （）.
Exhaust valve openings in a diesel engine cylinder head are made as large as practical to （）
In some modern large diesel engines, which of the following is used as the support for the main bearings?（）
In a large, low-speed diesel engine the clearance between the piston crown and cylinder head is found to be excessiveIn order to correct for this, you should（）
Modern marine diesel engines using mechanical fuel injection, operate on a combustion cycle which is（）
Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.
On a large diesel engine installation, crankshaft axial alignment is maintained by the （）
The majority of medium speed and high speed marine diesel engines for main or auxiliary drive operate on the （） cycle.
Cylinders of marine diesel engines are normally cooled by （）.
Pistons of marine medium speed diesel engines may be made of （） in order to keep the weight down for balancing purpose at high speed.
While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?（）
All marine low-speed diesels are of what design?（）
The marine diesel engine is a type of diesel engine used on shipsThe _____ of its operation is not very difficult to understand.
