单选题Operating a rotary pump at speeds in excess of design requirements could cause（）.A decreased clearances between rotating partsB decreased slippage to the suction side of the pumpC air binding in the discharge portsD erosion and excessive wear

题目

单选题

Operating a rotary pump at speeds in excess of design requirements could cause（）.

decreased clearances between rotating parts

decreased slippage to the suction side of the pump

air binding in the discharge ports

erosion and excessive wear

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第1题

You need to recommend a configuration design for the new VMs. The design must ensure that operating systems can be deployed to the new VMs. What should you include in the recommendation？（）A、virtual machine queue （VMQ）B、Virtual Machine ChimneyC、a synthetic network adapterD、an emulated network adapter

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第2题

单选题If a centrifugal pump vibrates and is noisy when operating, the cause could be （）.A worn gland sealing shaftB worn wearing ringsC a bent shaftD reversed pump coupling

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第3题

单选题Pressure in an operating hydraulic system is developed （）.A only by the pump as its primary functionB by resistance to the fluid flow through the systemC by the thermal input to the systems fluidD solely by the charge applied by the accumulators

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第4题

单选题The possibility of damage from operating a diesel engine at critical speeds is reduced by the use of（）.A an isochronous governorB elastic engine mountsC a vibration damperD a cast iron bed plate with good flexible qualities

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第5题

单选题You need to recommend a configuration design for the new VMs. The design must ensure that operating systems can be deployed to the new VMs. What should you include in the recommendation？（）A virtual machine queue （VMQ）B Virtual Machine ChimneyC a synthetic network adapterD an emulated network adapter

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第6题

单选题Which of the following statements represents the advantage of rotary pumps as compared to reciprocating pumps?（）A The high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pumpB Rotary pumps are capable of pumping more fluid than reciprocating pumps of the same weightC Rotary pumps occupy only one-half the space of reciprocating pumpsD Rotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pump

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第7题

单选题Which of the following pumps are self-priming, and can deal with liquid from a level below the pump? （） (1) reciprocating (2) rotary (3) centrifugalA （1）onlyB （1）and（2）C （1），（2）and（3）D （2）and（3）

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Operating a rotary pump at speeds in excess of design requir

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