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【单选题】

If the chemical analysis of a lube oil sample taken from a diesel engine indicates an increased neutralization number, the （）.

A、acidity has increased

B、viscosity has decreased

C、demulsibility has improved

D、foaming is guaranteed to occur

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更多“If the chemical analysis of a lube oil sample taken from a diesel engine indicates an increased neutralization number, the （）.”相关的问题
第1题
[单选题] A (n) （） is a chemical or electro-chemical attack on the metal surface which may be further increased if the sea-water is polluted.

A、erosion  B、corrosion  C、cavity  D、scouring  

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第2题
[单选题] On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.

A、acrylic acid  B、benzene  C、oleum  D、vinyl toluene  

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第3题
[单选题] The internal part of the boiler, if found （）, has to be chemically washed by yard.

A、deformed  B、rusted  C、cracked  D、scaled  

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第4题
[单选题] If an operating auxiliary boiler has a water pH reading of 7, you should （）.

A、bottom blow the boiler  B、treat the water with caustic soda  C、treat the water with chemical scavengers  D、reduce the water alkalinity to recommended readings  

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第5题
[单选题] Chemical Tankers are generally referred to the cargo ships constructed or adapted and used for the carriage of（）.

A、liquid chemicals in bulk  B、solid chemicals in bulk  C、chemicals in bulk  D、cargoes in bulk  

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第6题
[单选题] If sludge accumulates on the underside of a diesel engine piston, it will（）

A、cause blow-by  B、chemically attack the piston skirt  C、form an emulsion of lube oil and water  D、raise the piston temperature  

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第7题
[单选题] Which of the fire extinguishers listed is to be weighed annually and sent ashore for recharging if the weight loss exceeds 10% of the weight of a full charge?（）

A、Foam  B、Soda acid  C、Dry chemical  D、Carbon dioxide  

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第8题
[] If a leak occurred while loading diethylenetriamine，the chemical data guide indicates you would smell an odor similar to（）.

A、A.ammonia  B、B.rotten eggs  C、C.gasoline  D、D.None of the above  

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第9题
[单选题] No discharge into the sea shall contain（）in quantities or concentrations which are hazardous to the marine environment or chemicals or other substances introduced for the purpose of circumventing the conditions of discharge specified in MARPOL 73/78.

A、chemicals  B、chemicals or other substances  C、substances  D、other substances  

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