单选题电控柴油机控制系统中，当CCM根据曲柄轴编码器送来的曲柄角度信号和VIT，就可计算出喷射初始角，到达喷射初始角时刻CCM给VDM发喷油指令，使共轨电磁阀通电，如：低速、低负荷时，（）。A只需一个电磁阀工作B只需两个电磁阀工作C只需三个电磁阀工作D只需四个电磁阀工作
单选题
电控柴油机控制系统中，当CCM根据曲柄轴编码器送来的曲柄角度信号和VIT，就可计算出喷射初始角，到达喷射初始角时刻CCM给VDM发喷油指令，使共轨电磁阀通电，如：低速、低负荷时，（）。
A
只需一个电磁阀工作
B
只需两个电磁阀工作
C
只需三个电磁阀工作
D
只需四个电磁阀工作
参考解析
解析：
暂无解析
相关考题：
单选题钢质海船入级规范规定：并联运行的发电机应设有欠电压保护并能满足如下要求：（），用于避免发电机不发电时闭合断路器，当电压降低至额定电压的35％作失压处理。A延时1秒后动作B瞬时动作C延时2秒后动作D延时5秒后动作
单选题Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）AA shortage of liquid refrigerantBExcessive frost on the evaporatorCExcessive condenser cooling waterDInsufficient condenser cooling water flow
单选题The greatest effect on stability occurs from loose liquids flowing（）.Afrom side to side in the tanks of the vesselBfrom fore to aft in the tanks of a vesselCin and out of a vessel that is holed in a wing tankDin and out of a vessel that is holed in a peak tank
单选题Which of the following condition is likely to develop if the thermocouple element of a pyrometer becomes coated with excessive amounts of combustion by-products?（）AIndicated exhaust pressure readings will increaseBPyrometer responses will be retardedCIndicated cylinder temperature readings will increaseDIndicated firing pressure readings will increase
单选题赤道上1海里的地面长度约为1843m，若投影到墨卡托海图上的图长为1cm，则在同一张图上的60°纬度线上1海里的图长与下列哪一值最接近？（）A1cmB2cmC1.414cmD0.5cm
单选题The greatest detrimental effect on idle electrical equipment, such as cargo pump motors, is the（）.Aloss of residual magnetismBabsorption of moisture in the insulationCinsulation varnish flakingDdirt collecting on the windings
单选题At（）an occasional survey has been carried out.Athe remind of the masterBthe refer of the masterCthe render of the masterDthe request of the master
单选题The fuel booster pump and steam to fuel heater, together with fuel pipe heater tracer line should be shut off as soon as the （） order is acknowledged.Afinished with enginesBstopCstand byDfull ahead
单选题关于工业现场总线下列说法不正确的是（）。A总线是连接一个或多个部件的一组电缆的总称B总线系统结构只面向CPUCRS485和Profibus都是串行总线D数据传输的速度和总线的工作频率有关
单选题根据船员职务交接制度，以下表述有误的是（）A交班船员接到交班通知后，应做好交接准备B交班船员离船前必须按“交接班报告表”中的内容向接班人员交待清楚与职责相关的所有情况C操作级和管理级船员应备妥“交接班备忘录”D交班船员应帮助接班船员熟悉本船的应急部署和应急操作
单选题非强制冷却活塞头的热量传出主要途径是（）。A活塞裙部B活塞刮油环C活塞销与连杆D活塞密封环