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【单选题】

What is TRUE of pressure/vacuum valves? ()

A、They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tank

B、They should operate in advance of the pressure/vacuum breakers

C、They should be kept in good working order by regular inspection and cleaning

D、All of the above

更多“What is TRUE of pressure/vacuum valves? ()”相关的问题
第1题

A、True  B、Not true  C、An exception is thrown at runtime.  D、Compilation fails because of an error at line 12.  E、Compilation fails because of an error at line 19.  

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第2题

A、A.true true  B、B.false true  C、C.true false  D、D.false false  E、E.Compilation fails.  F、F. An exception is thrown at runtime.  

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第3题

A、A.truetrue  B、B.false true  C、C.true false  D、D.false false  

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第4题

A、A. The DESCRIBE DEPT statement displays the structure of the DEPT table.  B、B. The ROLLBACK statement frees the storage space occupies by the DEPT table.  C、C. The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.  D、D. The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.  

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第5题

A、The start value of the sequence is always 1.  B、A sequence always increments by 1.  C、The minimum value of an ascending sequence defaults to 1.  D、The maximum value of descending sequence defaults to 1.  

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第6题

A、The start value of the sequence is always 1.  B、A sequence always increments by 1.  C、The minimum value of an ascending sequence defaults to 1.  D、The maximum value of descending sequence defaults to 1.  

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第7题

A、A.The configuration that is shown provides inadequate outside address space for translation of the number of inside addresses that are supported.  B、B.Because of the addressing on interface FastEthernet0/1, the Serial0/0 interface address will not support the NAT configuration as shown.  C、C.The number 1 referred to in the ip nat inside souce command recerences access-list number 1.  D、D.ExternalRouter must be configured with static routers to network 172.16.2.0/24  

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第8题

A、1.Paragraph①()  B、2.Paragraph②()  C、3.Paragraph③()  D、4.Paragraph④()  E、5.Paragraph⑤()  F、A. What is the function of audio courses?  H、B. What is the function of flash cards?  I、C. What is the function of traditional courses?  J、D. What are the most useful tools for language learning?  K、E. What is the function of computer-aided courses?  F. What can help you a lot with your language learning?  下列选项正确的是()。  

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第9题

A、It provides a graphic display to emphasize which vessel is on a collision course  B、In the true presentation,it provides a quick visual check to determine if a vessel has changed course  C、The display is one of the primary inputs and must be in use when using the trial maneuver capability  D、It provides a graphic display of a target vessel's relative course,speed,and CPA  

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第10题

A、to fill 2 tanks at the same time  B、to use pump at a higher pressure  C、to return liquid to suction side if discharge valve is closed  D、All of the above are true  

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