6ESD43/82型船用柴油机气缸套最大内径增量为1.5mm，则最大缸径为

【名词&注释】

船用柴油机(marine diesel engine)、柴油机气缸套(engine cylinder liner)

[单选题]6ESD43/82型船用柴油机气缸套最大内径增量为1.5mm，则最大缸径为（）。

A. 431.5mm
B. 821.5mm
C. 44.5mm
D. 83.5mm

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学习资料：

[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

[单选题]The purpose of the safety relief valves installed on an auxiliary boiler is to （）.

A. relieve excess fuel oil pressure during the “off” fire cycle
B. admit water to the dry pipe
C. throttle the forced draft fan output for proper combustion
D. reduce excess steam pressure in the boiler

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