统计指数按其所表明的经济指标性质不同，分为（ ）
A.数量指标指数和质量指标指数
B.个体指数和总指数
C.定基指数和环比指数
D.平均指数和总指数
正确答案是A
Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
One of the tyres of the truck exploded because of （ ）．(over, load)
