问题
单项选择题
有功功率高故障的故障时间，故障值，执行停机方式如下叙述正确的是（）.
A.1s，1600kw，正常停机
B.1s，1550kw，快速停机
C.1s，1600kw，快速停机
D.1s，1550kw，正常停机
答案
参考答案：C
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有功功率高故障的故障时间，故障值，执行停机方式如下叙述正确的是（）.
A.1s，1600kw，正常停机
B.1s，1550kw，快速停机
C.1s，1600kw，快速停机
D.1s，1550kw，正常停机
参考答案：C
Water costs money．In some places water is hard 1 ．What 2 when a town has these problems？A small town in California found a happy 3． Very little rain ever fell there．The town had no water of its own．The water it used was 4 from a river 300 miles away．As more people 5 live in the town， 6 water was needed．Now water 7 to be brought in from 600 miles away．All these cost 8 money． The town 9 a plan．It found a way to clean its “dirty” water．Once the cleaned water was reused 10 many ways．Five man-made lakes were built．Here people could swim and fish and go 11 ．They could have picnics in their new parks．Farmers had more water 12 their crops．New factories can be built，now that they have the promise of 13 ． In most places，water is used and thrown 14 ．The town that saved 15 water has saved the town！
小题3:A．key B．answer C answering D．way
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