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单选题
When anaerobic bacteria convert the sewage to an inert sludge,（）
A
no oxygen is needed
B
oxygen is necessary
C
oxygen is given off
D
no gas is produced
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单选题The fresh air intake of the inert gas system（）.A
prevents the flue gas from falling below 3% content of oxygenB
allows the inert gas piping to be used for gas freeing the tanksC
opens when there is excessive vacuum on the deck water sealD
enables outside air to mix with and cool hot flue gasses
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单选题When running a Windows server， which option is used with the ping command to convert numerical addresses to host names？（）A
-rB
-aC
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单选题When the mixture is used, it is important to ______.A
keep sugar and salt in waterB
drink it as often as necessaryC
take it as much as possibleD
use it to kill the bacteria
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单选题The deck water seal of the inert gas system（）.A
cools the inert gas and prevents soot from entering the cargo tanksB
acts as an emergency system shutdown when the inlet pressures exceed the safe working pressure in the hazardous zoneC
prevents the backflow of hydrocarbon gasses into nonhazardous areasD
relieves sudden large overpressures in the system
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单选题It is that reduce the BOD by converting the organic content of the sewage to a chemically and organically inert sludge（）A
the bacteriaB
oxygenC
oxidizing functionD
agitation function
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单选题When anaerobic bacteria convert the sewage to an inert sludge,（）A
no oxygen is neededB
oxygen is necessaryC
oxygen is given offD
no gas is produced
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单选题Most marine biological sewage treatment plants consist of all the following statements except （）.A
aeration tanksB
settling tanksC
disinfection agentD
anaerobic bacteria
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单选题When performing a database duplication， which duplicate database parameter would you set to ensure that the online redo logs are created in the correct location？（）A
log_file_name_convertB
convert_log_file_nameC
file_name_convert_logD
redo_log_file_name_convertE
logfile_convert_directory
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单选题When running a Windows server， which option is used with the ping command to convert numerical addresses to host names？（）A
-rB
-aC
-vD
-n
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单选题The deck water seal of the inert gas system（）.A
cools the inert gas and prevents soot from entering the cargo tanksB
acts as an emergency shutdown when inlet pressures exceed the safe working pressureC
prevents the backflow of hydrocarbon gasses into nonhazardous areasD
relieves sudden large overpressures in the system
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