The ash content of a fuel oil is significant to the operatin

题目
单选题
The ash content of a fuel oil is significant to the operating engineer because it ()
A

is an indication of the amount of noncombustible material present in the oil

B

indicates the quantity of energy released by burning a unit amount of the fuel

C

is useful for determining proper atomization temperatures

D

reflects the overall thermal efficiency of the fuel oil service system

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相似问题和答案

第1题:

The core item in the Oil Record Book Part I is ____, and its main content is____.

A.Item A, BALLAST OR CLEANING OF FUEL OIL TANKS

B.Item B, DISCHARGE OF DIRTY BALLAST OR CLEANING WATER FROM FUEL OIL TANKS REFERRED TO UNDER SECTION(A)

C.Item C, DISPOSAL OF OIL RESIDUES(SLUDGE)

D.Item H, BUNKERING OF FUEL OIL


正确答案:C

第2题:

The core(核心) item in the Oil Record Book Part I is______, and its main content is______.

A.Item A, BALLAST OR CLEANING OF FUEL OIL TANKS

B.Item B, DISCHARGE OF DIRTY BALLAST OR CLEANING WATER FROM FUEL OIL TANKS REFERRED TO UNDER SECTION(A)

C.Item C, DISPOSAL OF OIL RESIDUES(SLUDGE)

D.Item H, BUNKERING OF FUEL OIL


正确答案:C

第3题:

The desirable properties of a marine fuel oil should include .

A.high flash point and high viscosity

B.low flash point and high viscosity

C.low heating value and high sulphur content

D.high heating value and low sulphur content


正确答案:D

第4题:

单选题
Heavy fuel oils generally have an upper average ash content of 0~1% by weight.Which of the following conditions could be expected if the ash content increase above this amount?()
A

Glazing of the cylinder liners

B

Increase valve wear

C

Excessive oil pumping

D

Increase fuel consumption


正确答案: D
解析: 暂无解析

第5题:

单选题
The consistent burning of fuel oil with a high sulfur content in a diesel engine will result in ()
A

clogged fuel injection pumps

B

increased cylinder liner wear

C

intake valve stem corrosion

D

varnish deposit on pistons


正确答案: C
解析: 暂无解析

第6题:

When an auxiliary boiler is panting and emitting(发出) black smoke, you should______.

A.increase the fuel oil temperature

B.decrease the fuel oil temperature

C.decrease the fuel oil supply pressure

D.increase the air supply


正确答案:D

第7题:

An oil tanker operating with dedicated clean ballast tanks shall be equipped with ______,approved by the Administration on the basis of specification recommended by the Organization,to enable supervision of the oil content in ballast water being discharged.

A.An oil content meter

B.An oil checker

C.An analyzer of oil content

D.A mixer of oily water


正确答案:A

第8题:

If a used lube oil analysis indicates excessive chromate content, this means

A.air filtration is inadequate

B.engine coolant is leaking into the lube oil

C.fuel oil is leaking into the lube oil

D.the piston rings are excessive worn


正确答案:B

第9题:

单选题
When lighting off an auxiliary boiler, which of the problems listed could cause the burners to sputter?()
A

cold fuel oil

B

low fuel oil pressure

C

low atomizing steam pressure

D

water in the fuel oil


正确答案: C
解析: 暂无解析

第10题:

单选题
The desirable properties of a marine fuel oil should include()
A

high flash point and high viscosity

B

low flash point and high viscosity

C

low heating value and high sulphur content

D

high heating value and low sulphur content


正确答案: D
解析: 暂无解析

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