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单选题
（） the oxygen content in the exhaust gas, （） the combustion is.
A
The lower；the worse
B
The higher；the better
C
The lower；the better
D
The highest；the worst
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bypass a portion of the exhaust gas at peak loads for better efficiencyC
recycle exhaust gas to the turbochargerD
minimize moisture condensation in the boiler gas passages at low loads
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单选题Gas exchange, which is a basic part of the cycle of an internal combustion engine, is（）A
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changing directions of exhaust gas flowC
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单选题Deficient oxygen content inside a chain locker can be detected with（）.A
litmus paperB
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单选题A combination combustible gas and oxygen indicator is an instrument that measures the（） of both combustible gas and oxygen; each is indicated on a separate meter.A
purifiesB
combinationsC
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filters
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单选题Inerting means（）.A
the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeB
the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeC
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考题
单选题SOLAS regulations require that the inert gas system shall be capable of delivering inert gas with an oxygen content of not more than what percentage?（）A
5%B
8%C
6%D
3%
考题
单选题Deficient oxygen content inside a chain locker can be detected with（）.A
litmus paperB
combustible gas indicatorC
oxygen breathing apparatusD
oxygen indicator
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单选题What is used to test a tank for oxygen content?（）A
Combustible gas indicatorB
Vapor indicatorC
Atmosphere analyzer kitD
None of the above
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