单选题To ensure oil purifier working in normal condition,the interval between two sludge discharging should not exceed（） hours.A 2B 4C 5D 6

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单选题

To ensure oil purifier working in normal condition,the interval between two sludge discharging should not exceed（） hours.

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相似问题和答案

第1题：

They should take care of（锚）_____to ensure that they are in normal condition.

A.anchors

B.anchor ball

C.anchor gear

D.anchor ring

正确答案：A

第2题：

To ensure oil purifier working in normal condition, the interval between two sludge discharging should not exceed_______hours.

A.2

B.4

C.5

D.6

正确答案：B

第3题：

Which of the following is NOT true about the centrifugal separator?

A.It can be applied to separate two liquids

B.It cannot separate solids which contaminated in the oil.

C.It consists of purifier and clarifier

D.The centrifuge arranged to separate two liquids is known as purifier

答案：B

第4题：

When accepting vehicles for shipment，the Master should ensure that ______.

A.all decks intended for the stowage of vehicles are，in so far as is practicable，free from oil and grease

B.the ship has on board an adequate supply of cargo securing gear，which is maintained in sound working condition

C.vehicles are in apparent good order and condition suitable for sea transport，particularly with regards to securing

D.All of the above

正确答案：D

第5题：

_______can cause oil flow from water outlet of the oil purifier.

A.Oil inlet valve opening too quickly

B.Oil temperature little higher than normal

C.Diameter of gravity disc too small

D.Viscosity of oil little lower than normal

正确答案：A

第6题：

If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the

A.oil has a tendency to emulsify in the bowl

B.purifier will act as a clarifier at the discharge ring

C.oil will be lost through the water discharge ports

D.oil solids will be deposited only at the intermediate top disk

正确答案：C

第7题：

One of the reasons that causes oil flowed from sludge outlet of a self-cleaning purifier is

A.seal water supply be cut off

B.make-up water supply be cut off

C.oil outlet valve closed or not open sufficiently

D.the flow rate of oil is too much

正确答案：B

第8题：

They should take care of（锚链）___to ensure that they are in normal condition.

A.anchor chains

B.anchor ball

C.anchor gear

D.anchor ring

正确答案：A

第9题：

tell us briefly about the working principles of the purifier ,the oil water seperator and air compressor .

正确答案：Purifier :the different gravity of two types of liquids: water and oil .the centrifugal force of the water move towards the outside of the disc while the oil ,which is smaller in gravity shall move toward the center of the disc .this makes the seperation of the two liquids . Oil water separator : (1) pump bilge water into first chamber :polymerization of the oil on the gathering plates ,(2) and then through a fine filter (15ppm) separation of water and oil ,(3)discharge of the water overboard via 15ppm monitor and the oil into oil sludge tank .Air compressor :take into the air from the outside atmosphere and compress it with the up going piston .then ,cool the compressed air .then compress the air once again until it reaches the stated pressure (depending on the air bottle allowed pressure ) For the maintenance of the air compressor ,fistly ,must check to make sure that the suction valve and outlet valve to be sealed ;then make periodical lifting of the piston to make the pistons are in good condition .must check the crankcance lube oil everyday .

第10题：

They should take care of（锚链）（）to ensure that they are in normal condition.

A、anchor chains
B、anchor ball
C、anchor gear
D、anchor ring

正确答案:A

To ensure oil purifier working in normal condition,the inter

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