【简答题】There are three components needed for ignition and combustion to occur: fuel, air and ______.
【判断题】质点的位置关于时间的函数称为运动方程。()
【单选题】How many battles are there in Beowulf?
【判断题】电饭锅的磁钢限温器限温后,自己是不能自动恢复的。
【判断题】变压器中接电源的绕组称为二次绕组,接负载的绕组称为一次绕组。
【判断题】变压器中接电源的绕组称为一次绕组,接负载的绕组称为二次绕组。
【单选题】5 下列立法成果中属于地方性法规、自治条例或单行条例的有( )
【单选题】The ability of a fuel particle to travel into the combustion chamber before burning is called _____.
【单选题】Fuel is injected into the combustion space by ( )