A common rail engine has only one or two high pressure pumps in operation at the same____time, and the injection into each cylinder .

题目介绍: Acommonrailenginehasonlyoneortwohighpressurepumpsinoperationatthe same____timeandtheinjectionintoeachcylinder., can ’t be controlled very precisely?can ’t be controlled as flexibly as the separate pump system?can be controlled as flexibly as the separate pump system?can be controlled more precisely and flexibly? 本题为最佳选择题收录于二管轮题库中。