如果2000年生物及医药制品的产值是3亿元,则同年光机电一体化的产值最接近() A. 发布时间:2017-05-21 22:20 │ 来源:www.tikuol.com 题型:单项选择题 问题: 如果2000年生物及医药制品的产值是3亿元,则同年光机电一体化的产值最接近()A.1亿元B.1.2亿元C.1.6亿元D.1.8亿元
题型:单项选择题 短文改错。At the end of last month, I attended at a celebration meeting hold in our school. At the meeting, 25 advanced teachers were praised and those had completed 30 years of teaching were given medals. Mr Yang is one of those praised. After the meeting, our classmates and I went to see him. Seeing us, the grey-haired teacher looked exciting, when some of us said we wanted to be teachers but devote ourselves to education in the future, he nodded with satisfactions. He said in a very firmly voice, "Teaching is a noble job. Man would be very stupid without education." We were all agreed and were greatly encouraged by his words.1. _____2. _____3. _____4. _____5. _____6. _____7. _____8. _____9. _____10. _____ 查看答案
题型:单项选择题 某交流电电源电压的瞬时值表达式为u=6sinl00πt(V),则下列说法中正确的是( )A.用交流电压表测该电源电压时,示数是6VB.用交流电压表测该电源电压时,示数是6VC.用此电源给电磁打点计时器供电时,打点的时间间隔为0.01sD.把标有“6V 3W”的小灯泡接在该电源上时,小灯泡将被烧毁 查看答案