"320km等于多少厘米?"...320km等于多少厘米?

　"320km是多少米"...320km是多少米

　"320km等于多少公里"...320km等于多少公里

　"320m等于多少km"...320m等于多少km

　"320km560m-27980m=多少米"...320km560m-27980m=多少米

　"320km/h等于多少m/s"...320km/h等于多少m/s

　"320千米等于多少公里"...320千米等于多少公里

　"3240km等于多少m"...3240km等于多少m

　"3200km等于多少厘米"...3200km等于多少厘米

　"320m等于多少千米?"...320m等于多少千米?