Lub cev muaj zog layout configurations yog dab tsi?

Lub cev muaj zog layout yog hais txog qhov chaw ntawm lub tshuab hluav taws xob ntawm lub tsheb chassis. Feem ntau, muaj peb qhov kev teeb tsa: pem hauv ntej-mounted, rear-mounted, thiab ua ke ntawm pem hauv ntej + rear-mounted.