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【单选题】

If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?（）

A、Centrifugal

B、Gear

C、Propeller

D、Turbine

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更多“If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?（）”相关的问题
第1题
[单选题] A seaman you have just discharged has a Continuous Discharge Book. Which statement is TRUE? （）

A、The record of entry in the continuous discharge book shall agree with the entry made in the Ship's Articles.  B、If the vessel was on coastwise articles，the record of discharge will be made in the Official Logbook.  C、An entry should be made in the book and a Certificate of Discharge issued to the seaman.  D、A Certificate of Discharge form should be attached to the book  

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第2题
[单选题] If fuel oil were being discharged from the waster outlet of a fuel oil disk type centrifuge, operated as separator, you should（）

A、remove the discharge ring  B、re-prime the purifier  C、the centrifuge to its proper speed  D、install an additional discharge ring  

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第3题
[单选题] If the discharge valves on a refrigeration compressor are leaking badly, the compressor should （）.

A、run continuously  B、not start  C、have high discharge pressure  D、short cycle on the high pressure switch  

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第4题
[单选题] If an operating bilge pump is developing good vacuum, but is unable to discharge any water, which of the following problems is the most probable cause?（）

A、The wearing rings are excessively worn  B、The suction strainer is clogged  C、The discharge valve is clogged  D、The shaft is worn  

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第5题
[] If you detect oil in the water around your vessel while discharging fuel, the FIRST thing to do is（）.

A、A.try to find out where the oil is coming from  B、B.call the Master  C、C.have the pump man check the discharge piping  D、D.shutdown operations  

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第6题
[单选题] 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  

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第7题
[单选题] Both the Shipowner and the Charterer will be discharged from their obligations under the charter-party if it（）frustrated.

A、provides  B、becomes  C、contains  D、comes  

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第8题
[单选题] Both the Shipowner and the Charterer will be discharged from their obligations under the charter-party if it（）frustrated.

A、provides  B、becomes  C、contains  D、comes  

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第9题
[单选题] Both the Shipowner and the Charterer will be discharged from their obligations under the charter-party if it（）frustrated.

A、provides  B、becomes  C、contains  D、comes  

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第10题
[多选题] Which the three EL expressions， inserted at line 15， are valid and evaluate to "3"？ （）

A、 ${vals.2 }  B、 ${vals ["2"]}  C、 ${vals.index }  D、 ${vals[index]}  E、 ${vals} [index]  F、 ${vals.（vals.index）}  H、 ${vals[vals[index-1]]}  

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