108. Allowance for axial expansion of the steam turbine due to temperature changes is provided for by the use of __________.

Axial expansion in steam turbines is accommodated by deep flexible I-beam supports, which provide vertical support while allowing axial movement without inducing stress or misalignment. Rotor position indicators measure rotor position, casing flexible joints manage casing stresses, and pivoted-shoe thrust bearings control axial thrust, none of which directly address axial expansion.