计算圆面积,错误表示方法为()。(r表示半径,D表示直径)
A.S=πr~2
B.S=πD~2/4
C.S=πr~2/4
参考答案:C
—Your school things are here and there. Will you please ?
—OK, I’ll do it right away.
A.give them away
B.fix them up
C.hand them out
D.put them away
加油站油罐清洗出来的残液,必须由上级公司集中收集、统一处理。