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问题 单项选择题

“ABC”分析方法的优劣论述错误的是（）

A.运用“ABC”分析方法可以识别对公司总成本影响最大的产品和项目

B.运用“ABC”分析方法对A、B、C类物品都能提高成本的管理绩效

C.运用“ABC”分析方法的重心集中于采购成本

D.运用“ABC”分析方法对B、C类物品提高成本的管理绩效收效甚微

答案

参考答案：B

阅读理解

The children often play soccer in the garden and sometimes break Mr Black’s windows. One afternoon Mr Black is at home and reads a book. In a minute he closes his eyes and goes to sleep. At that time a little boy knocks at the door. Mr Black opens his door and asks, “Do you break my window again?”

“Oh, no,” says the boy, “Your window is open this time and our soccer ball is in your room. May I get it, please?”

根据短文内容，判断下列句子T（正确） 还是F（错误）

小题1:The children often play soccer in the park.

小题2:Sometimes the children break Mr Black’s windows.

小题3:Mr Black watches TV one afternoon.

小题4:The children’s soccer ball is in Mr Black’s room.

小题5:The children break Mr Black’s window again.

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填空题

已知向量a=(1，2)，b=(-2，3)，若ka+b与a-kb垂直，则实数k的值等于（）．
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