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【单选题】

Production of mechanical foam by a portable in-line foam proportioner().

A、increases the size of foam bubbles formed

B、increases the rate of foam production

C、improves the extinguishing properties of foam

D、gives the nozzleman more freedom of movement,since it can be placed anywhere in the hose line

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第1题

A、A.temperature of the intake air  B、B.friction within the engine  C、C.mechanical condition of the supercharger  D、D.mechanical condition of the turbocharger  

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第3题

A、A. Add Tom's user account to the Group Policy Creator Owners group in the domain.  B、B. Run the Delegation of Control Wizard and assign Tom's user account the Allow - Manage group policy links permission for the Production OU.  C、C. Run the Delegation of Control wizard and assign Tom's user account the Allow - Change permission for the Production OU.  D、D. Run the Delegation of Control wizard and assign Tom's user account the Allow - Apply group policy permission for all GPOs that are linked to the Production OU.  

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第5题

A、Electrical loading  B、Mechanical distribution  C、Compressibility of air  D、Mechanical friction  

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第6题

A、mechanical energy to kinetic energy to potential energy  B、mechanical energy to potential energy to kinetic energy  C、potential energy to mechanical energy to kinetic energy  D、kinetic energy to mechanical energy to potential energy  

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第7题

A、testing for the mechanical load and the thermal load  B、inspecting thermal and mechanical condition of the engine  C、inspecting each system and exhaust temperature  D、testing for compress pressure and explosion pressure  

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第8题

A、A.machine efficiency  B、B.machinery efficiency  C、C.mechanical efficiency  D、D.mechanics efficiency  

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第9题

A、materials  B、factors of production  C、products  D、services  

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