In a given volume of whole blood, there are more white blood cells than red blood cells.
The underlined word is "more" if it is true write true. If it is false, change the underlined word and put the correct one. Please help me:(

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.