72和32的最大公约数是8.______.
72=2×2×2×3×3,
32=2×2×2×2×2,
72和32的最大公因数是:2×2×2=8;
故答案为:正确.
The office ordered his soldiers ________.[ ]
A. to stand still
B. to not stand still
C. not stand still
D. stand still
A.铁球和木球的机械能始终相等
B.铁球和木球同在桌面上时,重力势能相等
C.铁球的重力势能始终大于木球的重力势能
D.铁球的动能始终大于木球的动能