The amount of fluid delivered by a positive displacement pump can be regulated by _____.

A．throttling the pressure line

B．changing the speed of the driving rotor

C．either A or B

D．None of the above is tree

[单选题]Some students are enthusiastic for positions in student organzation probably because _____A．they hate the constant pressure and strain of their studyB．they will then be able to stay longer in the universityC．such positions help them get better jobsD．

[单选题]Overheating of the hydraulic fluid in an electro-hydraulic anchor windlass can result from a/an( ).A．overload on the pump motorB．low fluid level in the reservoirC．low fluid viscosity around the shaft sealD．high oil level in the sump

[单选题]On a diesel engine, fuel is delivered into the combustion space by （）.A . a cooling systemB . a lubrication oil systemC . an electric systemD . an injection system

[单选题]Fuel is delivered into the combustion space by （）.A . a cooling systemB . a lubricating systemC . an electric systemD . an injection system

[单选题]A．ir trapped in the hydraulic fluid of a steering system may be indicated byA．the steering pumps overspeedingB．a jammed open relief valveC．a constantly occurring improper rudder responseD．excessive ram pressure

[试题]H．ow are bridge tables delivered to classify groups of dimension records associated to a singlefact?简述桥接表是如何将维度表和事实表进行关联的？

[单选题]fluid是指哪个模块（）A . 流体B . 建模C . 贴图D . 渲染

[名词解释] 英译中：Delivered Duty Paid

[名词解释] 羊水栓塞(amnionic fluid embolism)

[名词解释] 龈沟液 gingival crevicular fluid，GCF