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Fill int the blanks with the words given below. Change the form where necessary. Each word can be used only once.1. New Zealand is famous for its clean beaches, friendly people and magnificent .2. That company decided after a board meeting that the old in the factories be done away with.3. The key to an effective presentation is to state your points clearly andeach of your points at the end of your presentation.4. My favorite store is the one that in hand-made chocolates and lets you sample them.5. It is sad that when he is alone, he always drinks a(n) amount of alcohol to get himself drunk.6. To our delight, this new smoke alarm system can effectivelyvery weak signals.7. We have sent our union to look into the case and see who is responsible.8. James is famous for skillfully using white and black colors; however, bright colors his early painting.9. I made a(n) analysis between the two theories to show their similarities and differences.10. The project is an important step toward a national health service, and the authorities are trying hard to the exercise facilities.11. In recent years, the small city has taken on a new look because of its development.12. A(n) library system is one that stores all the records of the library on computer.

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关于相似律、比例律的应用(注册师考试都有下列题型,甚至是之前的原题)1、在产品试验中,一台模型离心泵尺寸为实际泵的1/4,在转速n0=730r/min时进行试验,此时量出模型泵的设计工况出水量为Q0=11L/s,扬程为H0=0.8m。如果模型泵与实际泵的效率相等,请计算实际水泵在n=960r/min时的设计工况流量和扬程。(相似律的应用)2、己知:某离心泵n1=960r/inin时(Q -H)1曲线上工况点为A1(Q1=42L/s, H1=38.2m),转速由n1调整到n2后,其相似工况点为A2(Q2=31.5L/s、H2=21. 5m), 求n2?(比例律的应用)3、某泵名牌参数为n=2000r/min,Q=0.17m3/s,H=104m,N=184KW。另有一相似的水泵,其叶轮直径是上述水泵叶轮的2倍,转速为1500r/min,请计算该泵在高效点的Q、H、N。手写,要有详细的计算过程,拍照上传答案。

比转数的计算:注册师考试都会考,三种情况都要会计算(单级单吸、双吸、多级),要注意单位换算。1)某单级单吸泵的流量Q=45m3/h,扬程H=33.5m,转速n=2900r/min,请计算其比转数ns等于2)有一台多级泵(八级),性能表中显示流量Q=45m3/h,H=160m,转速n=2900r/min,计算其比转数ns。3)已知12sh-13型水泵Q=220L/s,H=50m,n=1450r/min,计算其比转数?要求:手写,详细计算过程,拍照上传。要求数据:去尾法后个位数为零。

一个完整的学习系统一般应包括( )。

A. 环境
B. 学习
C. 知识库
D. 执行与评价

机器学习按学习方法分类可以分为( )。

A. 监督学习
B. 无监督学习
C. 半监督学习
D. 强化学习

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