高压供电系统计算三相短路电流时,一般高压架空线每千米电抗值取()。
A.0.2Ω
B.0.3Ω
C.0.4Ω
D.0.5Ω
参考答案:C
Many people go to school for an education. Some learn languages, history, math and other subjects. Others go to school to learn a skill. School education is very important and useful. Yet, no one can learn everything from school. A teacher can not teach his students everything they want to know. So, much more is to be learned outside school by the students themselves.
Great people before us didn’t get everything from school .Their teachers only showed them the way. Edison did not even finish school. But they were all so successful because they knew how to study. They read books that were not taught at school . They would ask many questions as they read. They worked hard all their lives. Above all , they knew how to use their heads.
根据短文内容,判断下列句子的正 (A)与误 (B),并在答题卡的相应位置将其涂黑。
小题1:Many people go to school only for an education, they don’t go there to learn a skill.
小题2:People can learn everything from school.
小题3:Students can learn much more outside school by themselves.
小题4:Edison was successful because he read many books that were taught at school.
小题5:Great people knew how to use their heads.
“忆昔开元全盛日,小邑犹藏万家室。稻米流脂粟米白,公私仓廪俱丰实”,反映了唐朝盛世辉煌的景象,诗中所言“开元”是谁的年号
A.唐太宗
B.唐玄宗
C.武则天
D.唐睿宗