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单选题
The device allowing for the change in volume of the cooling water in a propulsion diesel engine closed cooling system is the （）.
A
fresh water expansion tank
B
sea water expansion tank
C
thermostatic expansion valve
D
jacket water cooler accumulator
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单选题If a diesel engine were running at 20% overload with a smoky exhaust, you should（）A
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Change the quorum required to false.B
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Change the auto vary on value of the Volume Group to no， and then vary off the volume group.D
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单选题The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and （）.A
reduce water temperatureB
reduce water turbulenceC
provide an air cushionD
allow for an increase in water volume as the engine warms up
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The logical volume that hosts the snapshots is full. Increase the size of the logical volume.C
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单选题Which of the following statements is correct for the design and installation of diesel engine cooling water systems?（）A
An alarm device with audible and visible signals is required for all cooling water systemsB
Propulsion engines with bores over 200 mm are to be fitted with cooling water jacketsC
Each totally enclosed cooling system shall be provided with a suitable head tankD
Drain cocks are to be provided at the lowest points of all cylinder water jackets
考题
单选题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 tankB
a service tankC
a head tankD
an expansion joint
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