{HEAD ~ first determination} means for determining a second torque reference value which is a reference of the second torque based on a stored first relationship between the operation amount of the acceleration operation member and the second torque reference value, and {TAIL ~ the detected operation amount} of the acceleration operation member; and 
{ HEAD ~ first determination } means for determining a second torque reference value which is a reference of the second torque based on a stored first relationship between the operation amount of the acceleration operation member and the second torque reference value , and { TAIL ~ the detected operation amount } of the acceleration operation member ; and
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH