It is well known that good lubrication will _____ the bearings from becoming overheated.
Capacitance is the property of an electric circuit opposing a change in the _____.
For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an _____.
On the top of the cylinder is mounted the cylinder cover which is pressed onto _____ of the cylinder liner by means of nuts and studs.
The water level showing in a boiler water gauge glass is usually _____ during working.
A solenoid valve used in a refrigeration system should be installed .
Which of the following statements represents the advantage of rotary pumps as compared to reciprocating pumps?
Charging-air pressure increases if there is incorrect combustion and drop in the _____ of the diesel engine.
_____ is fully floating in both connecting rod small end and the piston skirt.
Which one is not the component of a typical, marine pattern self-contained unit?
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GMDSS试题练习(1)
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