简述链壶菌、离壶菌的流行情况。
On most diesel engines, the governor controls the output speed by （）. ["controlling the amount of fuel injected into the cylinders","varying the speed of the turbocharger","adjusting the compression ratio","changing the timing of the fuel injection camshaft"]
人力资源的技能可以分为一般技能和岗位技能。
在PowerPoint 2003中，放映文件的扩展名是（）。 ["PPS","PPT","PSP","PPZ"]
Which of the following devices is common to both mechanical and hydraulic governors?（） ["Direct linkage between the ball-head and fuel rack","A servomotor","A compensating device","Flyweight"]
人力资源开发与管理的使命是什么？
