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【单选题】

After stopping oily water separator, sea water should be permitted for () minutes,()should be closed after stopping pump to reduce oxidation corrosion of inner wall.

A、15;inlet value

B、15;inlet and outlet value

C、30;inlet value

D、30;inlet and outlet value

更多“After stopping oily water separator, sea water should be permitted for () minutes,()should be closed after stopping pump to reduce oxidation corrosion of inner wall.”相关的问题
第1题

A、A.at the first stop after a long voyage egby anchoring if possible  B、B.at the first stop after arrival at harbor  C、C.at the first stop after low load running  D、D.at the first stop after passing river or canal passage  

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第2题

A、After stopping supplying sludge oil, the value and pipe should be flushed by flushed by diesel oil and the incinerator continue burning for 10 minutes  B、Close auxiliary burner firstly and then close main burner  C、After stopping fuel, restoring the position of main fuel supply valve  D、Stop blower as soon as stopping supplying fuel oil  

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第3题

A、After operation, start the electric motor.  B、Before operation, stop the electric motor.  C、Before operation, start the electric motor.  D、After operation, stop the electric motor.  

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第4题

A、The required oily-water separator malfunctions  B、The ship is transferred to Liberian registry  C、An annual survey is conducted fifteen months after the date of certificate issuance  D、A 15 ppm oily-water separator is replaced by a 100 ppm oily-water separator  

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第5题

A、The required oily-water separator malfunctions  B、The ship is transferred to Liberian registry  C、An annual survey is conducted fifteen months after the date of certificate issuance  D、A 15 ppm oily-water separator is replaced by a 100 ppm oily-water separator  

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第6题

A、A.The required oily-water separator malfunctions  B、B.The ship is transferred to Liberian registry  C、C.An annual survey is conducted fifteen months after the date of certificate issuance  D、D.A 15 ppm oily-water separator is replaced by a 100 ppm oily-water separator  

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第7题

A、A.forward  B、B.off  C、C.with  D、D.on  

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第8题

A、start  B、open  C、stop  D、turn on  

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第9题

A、till  B、after  C、before  D、until  

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