Akufunsira:
Mapaipi opanda zitsulo opangidwa ndi chitsulo chamtunduwu amagwiritsidwa ntchito kwambiri muzitsulo zama hydraulic, masilinda a gasi othamanga kwambiri, ma boiler othamanga kwambiri, zida za feteleza, kusweka kwa mafuta, manja a axle yamagalimoto, injini za dizilo, zopangira ma hydraulic, ndi mapaipi ena.