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【单选题】

For proper operation, auxiliary boiler feed water must have which of the following characteristics?（）

A、High oxygen concentration

B、Low pH

C、Proper alkalinity

D、All of the above

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更多“For proper operation, auxiliary boiler feed water must have which of the following characteristics?（）”相关的问题
第1题
[单选题] All of the followings are the detainable deficiencies under the SOLAS Convention expert（）.

A、Failure of proper operation of propulsion and other essential machinery, as well as electrical installation  B、Failure of the proper operation of the main and auxiliary steering gear  C、Failure of engineering watch arrangements to confirm to the requirements specified for the ship by Administration  D、Failure of the proper operation of emergency generator, lighting, batteries and switches  

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第2题
[单选题] During the PSC inspection under the provision of SOLAS 74, which one may be regarded as clear grounds for ships’ detainment?（）

A、failure of proper operation of propulsion  B、paint peeling off the uptake  C、no operation procedures for the oil separators  D、damaged sanitary pump  

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第3题
[单选题] During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ships’ detainment?（）

A、failure of the proper operation of the main steering gear  B、failure of the proper operation of electrical installations  C、leakage of domestic water pump  D、insulation of exhaust pipes in engine room contaminated by oil  

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第4题
[单选题] For any piston ring to operate smoothly without scuffing ,the ring must be （）.

A、of a material harder than the cylinder liner  B、properly lubricated  C、prevented from compressing  D、prevented from rotating during engine operation  

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第5题
[单选题] Is considered to be one of the detainable deficiencies under the STCW Convention（）.

A、Absence, substantial deterioration or failure of proper operation of the cargo deck area fire protection on tanker  B、Absence, non-compliance or serious deterioration of lights, shapes or sound signal  C、Absence or failure of proper operation of the radio equipment for distress and safety communication  D、Absence in a watch of a person qualified to operate equipment essential to safe navigation, safety radio communications or the prevention of marine pollution  

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第6题
[单选题] The（）should ensure that the holds in which chemical packages are stowed are properly supervised during the loading operations and these packages are regularly inspected for leakage or damage on the voyage.

A、berth operator  B、harbour supervisor  C、master of a ship  D、port authority  

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第7题
[单选题] Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?（）

A、Insure the chemical is powdery  B、Replace the cartridge  C、Pressure test the discharge hose  D、Test the pressure gauge for proper operation  

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第8题
[单选题] Hydraulic cranes must be properly warmed-up before being operated because （）.

A、warm-up allows the hydraulic system to become charged with oil  B、warm-up allows the relief valves to be properly tested  C、hydraulic strainers operate only during the warm-up period  D、hydraulic fluid must be at the proper viscosity  

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第9题
[单选题] During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ships’ detainment?（）

A、failure of the proper operation of emergency generator  B、insulation of piping including exhaust pipes in engine room contaminated by oil  C、improper operation of bilge of bilge of bilge pumping arrangements  D、damaged sanitary pump  

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