If the biscuits are of different varieties and the baking conditions (time and temperature) are different, they need to be baked separately, and after the first type is discharged from the furnace, the temperature setting should be changed, then preheated to the specified temperature and baked in the furnace. If the biscuits are of different varieties, but the baking conditions are the same, then they can be baked together in one furnace. This is not true. ...