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我省水资源的基本特征是什么？

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某一高供高计用户，本月抄见有功电量为1582000kW/h，无功电量为299600kW/h，求该户当月加权平均功率因数？

If the aim of a lesson is “To learn the names of colours ” the lesson may focus on a

A. subject
B. name
C. pattern
D. topic

Even if the aim is to test reading and listening, students should be asked to write too much.()
参考答案：错误

At an ____ level, you will probably want to spend more time on accuracy work in order

A. intermediate
B. advanced
C. primary
D. elementary