单项选择题Before marine sewage treatment plant works () should be filled with fresh water.

A.deposition chamber
B.oxidation pool
C.disinfection chamber
D.all chamber


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2.单项选择题When the incinerator is stopped, which of the following is wrong?()

A.After stopping supplying sludge oil, the value and pipe should be flushed by flushed by diesel oil and the incinerator continue burning for 10 minutes
B.Close auxiliary burner firstly and then close main burner
C.After stopping fuel, restoring the position of main fuel supply valve
D.Stop blower as soon as stopping supplying fuel oil

3.单项选择题Concerning the incinerator’s operation, which of the following is not correct?()

A.Scavenging time should be more 30 seconds before igniting
B.The temperature of sludge tank is 80~100℃
C.First igniting the incinerator with diesel oil, when the temperature of health is about 600℃, the sludge oil drawn in
D.The ash can be dumped into sea when the distance is more than 3 miles from land

5.单项选择题Which of the following is wrong about operation of oily water separator?()

A.filled with clean water before operation
B.keep air cushion in oil collecting space during running
C.check oil level during running
D.clean inner separator with low pressure stream

6.单项选择题When oily water separator is operating, which measure () is wrong.

A.pay attention to operating parameters
B.renew and clean separating units in time
C.check oil level in separator to prevent overload
D.check separating effect, if it is bad, flush with large capacity water pump

7.单项选择题The following measures can be used to improve oily water separator’s separating effect except ()

A.overhauling every two year
B.working at intervals
C.renewing filtration material
D.pumping bilge water from different layers respectively

8.单项选择题If separating effect is not good, which measure should be taken ()

A.working at intervals and properly heating
B.warming up to 70℃, increase water supply flow
C.improving impulse of water supply
D.reducing water supply flow

9.单项选择题If separating effect is not good, we can improve it by ()

A.flushing separator with hot water
B.increasing water supply flow
C.heat oily water properly
D.opening manual oil discharge value

10.单项选择题If found oil when we open low oil level plug of separator, it indicates ()

A.the separator is overload
B.the monitor equipment of separator fails
C.the discharge pump of separator can not work
D.the temperature of oil water is low