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【单选题】

Which one of three elements for a fire on a tanker vessel is most difficult to eliminate (isolate)?()

A、a combustible element, fuel

B、energy (resources for ignition) to start the combustion

C、oxygen to support the combustion

D、both A and C are correct

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第1题

A、two rockets,<em>oneem> <em>ofem> <em>whichem> shall be the buoyant type  B、<em>threeem> rockets,<em>oneem> <em>ofem> <em>whichem> shall be the buoyant type  C、four rockets,two <em>ofem> <em>whichem> shall be the buoyant type  D、five rockets,two <em>ofem> <em>whichem> shall be the buoyant type  

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第2题

A、Each has <em>threeem> separate but identical armature windings acted on by <em>oneem> system <em>ofem> rotating magnets  B、Each has <em>oneem> armature winding acted on by <em>threeem> identical but separate systems <em>ofem> rotating magnets  C、All <em>threeem>-phase alternators are designed to operate with a O8 leading power factor  D、The <em>threeem> phases always provide power to the load through <em>threeem> sets <em>ofem> slip rings and brushes  

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第3题

A、&ensp;<em>Oneem>,&ensp;two,&ensp;<em>threeem>&ensp;or&ensp;four&ensp;processors  B、&ensp;<em>Oneem>,&ensp;two,&ensp;or&ensp;<em>threeem>&ensp;processors  C、&ensp;<em>Oneem>,&ensp;<em>threeem>,&ensp;or&ensp;four&ensp;processors  D、&ensp;<em>Oneem>,&ensp;two&ensp;or&ensp;four&ensp;processors  

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第4题

A、A Government Reporting Entity (GRE)/Legal Entity can point to <em>oneem> and only <em>oneem> Set <em>ofem> Books.  B、Inventory Orgs can be associated directly with a GRE/Legal Entity.  C、The creation <em>ofem> a Master Inventory organization is mandatory.  D、<em>Oneem> and only <em>oneem> Operating Unit can be associated with a GRE/Legal Entity.  E、<em>Oneem> Set <em>ofem> Books can have <em>oneem> or many GRE's/Legal Entities associated with it.  

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第5题

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第6题

A、Constant pressure system  B、Variable pressure system  C、Variable displacement system  D、Constant volume system  

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第7题

A、no fog signal  B、<em>oneem> short blast  C、<em>oneem> prolonged and <em>threeem> short blasts  D、<em>oneem> prolonged,<em>oneem> short,and <em>oneem> prolonged blast  

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第8题

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第9题

A、Utilizing Cisco NSF in Layer 2 environments can reduce outages to <em>oneem> to <em>threeem> seconds.  B、Utilizing SSO in Layer 3 environments can reduce outages to <em>oneem> to <em>threeem> seconds.  C、Distribution switches are single points <em>ofem> failure causing outages for the end devices.  D、Utilizing Cisco NSF and SSO in a Layer 2 environment can reduce outages to less than <em>oneem> second.  E、NSF and SSO with redundant supervisors have the most impact on outages at the access layer.  

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第10题

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