The pump has a constant stroke and the amount of fuel delivered is regulated by rotating () which has a specially arranged helical groove cut into it.
                    举一反三
- It has been<br/>_______ that the meeting will be held in the Admin Building. A: arranged B: polluted C: compensated D: delivered
 - This crop does not do well in soils ______ the one for which it has been specially developed.
 - Which<br/>has the biggest effect on diastolic arterial pressure ? ( ) A: stroke<br/>volume B: peripheral<br/>resistance C: large<br/>artery elasticity D: cardiac<br/>pump function E: vascular<br/>filling
 - Impurities in the fuel oil will affect the operation of the engine, which has () the use of separator and some other devices.
 - The machine has stopped rotating because the bearing () the shaft.
 
