999kao.com
上海海得控制系统股份有限公司1月招聘面试题70道202014

requests中get请求方法的使用为requests.get(网址,data=data)()

此题为判断题(对,错)。


参考答案:错


在Scrapy的目录下,哪个文件负责数据抓取以后的处理工作 ()

A.spiders文件夹

B.item.py

C.pipeline.py

D.settings.py


正确答案:C


The search engines work by means of _________.

A. arranging links to the Internet

B. submitting specific search term

C. updating a knowledge database

D. searching engine spiders


正确答案:B
细节推理题。从最后一段“They, to not categorize links to web places like web directories do but they allow users to’ search the Internet’ using specific search terms.”(它们不像网页目录那样可以将许多信息分类联系在一起,但是它们允许人们使用特定的搜索术语“在网上查找资料”。)得出选项B(submitting specific search terms使用固定的搜索术语)为正确答案。


使用scrapy-redisl构建分布式爬虫,需要在settings.py文件中设置()。

A、SCHEDULER=Scrapy-redisschedulerSchedule

B、SCHEDULER='SCRAPYschedulerScheduleCDUPEFILTER_

C、LASSscrap_redis.dupefilterRfpdupefilter

D、dupefilter-class=scrap.dupefilterRfpdupefilter'


参考答案:A


---Ring off engine! ---Ring off engine! _________________

A.Finished with engine!

B.Engine rung off!

C.Engine stand by!

D.Got it.


正确答案:B


上海海得控制系统股份有限公司1月招聘面试题面试题面试官常问到的一些题目整理如下:问题 Q1:什么是_init_?可用的回答 :_init_是Python中的方法或者结构。在创建类的新对象/实例时,将自动调用此方法来分配内存。所有类都有_init_方法。问题 Q2:list和tuple有什么区别?可用的回答 :列表和元组之间的区别在于列表是可变的而元组不是。元组可以被散列,例如作为词典的关键。问题 Q3:简述一下scrapy的基本流程?可用的回答 : scrapy分为9个步骤: 1. Spiders需要初始的start_url或则函数stsrt_requests,会在内部生成Requests给Engine; 2. Engine将requests发送给Scheduler; 3. Engine从Scheduler那获取requests,交给Download下载; 4. 在交给Dowmload过程中会经过Downloader Middlewares(经过process_request函数); 5. Dowmloader下载页面后生成一个response,这个response会传给Engine,这个过程中又经过了Downloader Middlerwares(经过process_request函数),在传送中出错的话经过process_exception函数; 6. Engine将从Downloader那传送过来的response发送给Spiders处理,这个过程经过Spiders Middlerwares(经过process_spider_input函数); 7. Spiders处理这个response,返回Requests或者Item两个类型,传给Engine,这个过程又经过Spiders Middlewares(经过porcess_spider_output函数); 8. Engine接收返回的信息,如果使Item,将它传给Items Pipeline中;如果是Requests,将它传给Scheduler,继续爬虫; 9. 重复第三步,直至没有任何需要爬取的数据 问题 Q4:如何删除python数组的值?可用的回答 :可以使用pop()或remove()方法删除数组元素。这两个函数之间的区别在于前者返回已删除的值,而后者则不返回。问题 Q5:简单谈下GIL?可用的回答 : Python代码的执行由Python 虚拟机(也叫解释器主循环,CPython版本)来控制, Python 在设计之初就考虑到要在解释器的主循环中,同时只有一个线程在执行,即在任意时刻,只有一个线程在解释器中运行。 对Python 虚拟机的访问由全局解释器锁(GIL)来控制,正是这个锁能保证同一时刻只有一个线程在运行。 在多线程环境中,Python 虚拟机按以下方式执行: 1. 设置GIL 2. 切换到一个线程去运行 3. 运行: a. 指定数量的字节码指令,或者 b. 线程主动让出控制(可以调用time.sleep(0)) 4. 把线程设置为睡眠状态 5. 解锁GIL 6. 再次重复以上所有步骤 在调用外部代码(如C/C+扩展函数)的时候,GIL 将会被锁定, 直到这个函数结束为止(由于在这期间没有Python 的字节码被运行,所以不会做线程切换)。 问题 Q6:Python中的生成器是什么?可用的回答 :实现迭代器的方法称为生成器。这是一个正常的函数,除了它在函数中产生表达式。问题 Q7:Python中的self是什么?可用的回答 :self是类的实例或对象。在Python中,self包含在第一个参数中。init方法中的self变量引用新创建的对象,而在其他方法中,它引用其方法被调用的对象。问题 Q8:Python中的反向索引是什么?可用的回答 :Python序列可以是正数和负数的索引。对于正索引,0是第一个索引,1是第二个索引,依此类推。对于负索引,( - 1)是最后一个索引,( - 2)是倒数第二个索引,依此类推。问题 Q9:大数据的文件读取?可用的回答 : 1. 利用生成器generator 2. 迭代器进行迭代遍历:for line in file 问题 Q10:list和tuple有什么区别?可用的回答 :列表和元组之间的区别在于列表是可变的而元组不是。元组可以被散列,例如作为词典的关键。算法题面试官常问到的一些算法题目整理如下(大概率会机考):算题题 A1:跳跃游戏题目描述如下:Given an array of non-negative integers, you are initially positioned at the first index of the array.Each element in the array represents your maximum jump length at that position.Determine if you are able to reach the last index.Example 1:Input: 2,3,1,1,4Output: trueExplanation: Jump 1 step from index 0 to 1, then 3 steps to the last index.Example 2:Input: 3,2,1,0,4Output: falseExplanation: You will always arrive at index 3 no matter what. Its maximum jump length is 0, which makes it impossible to reach the last index.给一组数组,返回能不能到达最后的位置。每个位置包含的是从此点出发可走的最远距离,在哪里落脚随意。思路:从 0 开始,找到剩下的里面 下标 + 能走多远 最大的一个。然后一直重复即可。下面的这个代码并不是一遍的 O(n) ,用此思路也可以优化成 O(n),不优化了,没什么优化难点。关键字:current_index 变更为上次range的末尾,并相应的减去。beat 66%测试地址:https:/ Solution(object): def canJump(self, nums): :type nums: Listint :rtype: bool dp = nums0 current_index = 0 while 1: if current_index + dp-1 = len(nums)-1: return Tr

"Stand by an engine" means

A."prepare to stop the engine"

B."assemble an engine on its bedplate"

C."make an engine ready for starting"

D."dismantle an engine"


正确答案:C


You are analyzing the performance of a SQL Azure database.   You need to recommend an approach for identifying the indexes that should be added to improve database performance.  What should you recommend?()

  • A、 Use SQL Server Profiler to identify missing indexes.
  • B、 Use the Database Engine Tuning Advisor to identify missing indexes.
  • C、 Use a Dynamic Management View to analyze query plans.
  • D、 Use a DynamicManagement View to ascertain the number of pending I/O requests.

正确答案:C


---()! ---Engine dead slow astern!

  • A、Dead slow astern
  • B、Engine slow astern
  • C、Engine half astern
  • D、Ready

正确答案:A


---Stand by engine! ---Stand by engine!()

  • A、Engine stand by!
  • B、Finished with engine!
  • C、Engine by stand!
  • D、OK.

正确答案:A


---Ring off engine! ---Ring off engine! ()

  • A、Finished with engine!
  • B、Engine rung off!
  • C、Engine stand by!
  • D、Got it.

正确答案:B

更多 “上海海得控制系统股份有限公司1月招聘面试题70道202014” 相关考题
考题 单选题In conventional systems, the injection pressure(), while it’s()in common rail diesel engines.A fluctuates with the engine speed to some extent, independent of the engine speedB keeps constant at all engine speed, dependent on the engine speed to some extentC keeps constant at all engine speed, independent of the engine speedD is decided by the engine speed, constant at all engine speed正确答案:C解析:暂无解析

考题 单选题The diesel engine exhaust gas bypass, as fitted with some waste heat boilers, is installed to ()A prevent engine back pressure at heavy loadsB increase total engine efficiency at low loadsC prevent boiler corrosion at low engine loadsD improve engine fuel consumption at any load正确答案:C解析:暂无解析

考题 单选题“Stand by engine” means ().A prepare to stop the engineB assemble an engine on its bedplateC make an engine ready for startingD make an engine run steadily正确答案:C解析:暂无解析

考题 单选题Maximum horsepower of a diesel engine is attained ().A when the engine RPM is pulled down by overloadB at rated engine RPMC at 95 % of rated engine RPMD at 95 % of a properly adjusted governor RPM with the engine under full load正确答案:B解析:暂无解析

考题 单选题You are planning the migration of an existing application to Windows Azure and SQL Azure.  The application produces report files at the request of remote systems.   Requests for report files will be placed into a single Windows Azure Queue.   You must minimize the compute resources and storage transactions required to process the requests.   You need to recommend an approach for processing the requests. What should you recommend?()ACreate a worker role for each report file that constantly polls the queue for requests.BCreate a workerrole for each report file that checks the queue at scheduled intervals for requests.CCreate a single worker role that constantly polls the queue for requests and executes the requests on multiple threads.DCreate a single worker role that checks the queue at scheduled intervals for requests and executes the requests on multiple threads.正确答案:C解析:暂无解析

考题 What happens when you issue the ping 172.19.102.2 count 5 command?()A、ICMP echo requests are sent to 172.19.102.2 in five-millisecond intervals.B、ICMP echo requests are sent to 172.19.102.2 until five packets are dropped.C、ICMP echo requests are sent to 172.19.102.2 five times.D、ICMP echo requests are sent continuously to 172.19.102.2 for five seconds.正确答案:C

考题 Which statement about the DVS engine is true?()A、the DVS engine can useWebroot and McAfee scanning in parallelB、the DVS engine generates the WBRSC、the DVS engine never inspects the client HTTP requestD、the DVS engine is only used for Layer 4 traffic monitoring正确答案:A

考题 单选题Which is false about engine trials?()A engine trails should be done after finishing the operation of turning the engine with the turning gear and starting the engine on air brieflyB in the operation of engine trails, the main engine should be running in low-speedC As to the ship equipment with twin main engine, engine trials should be done with one engine ahead and another engine astern at the same timeD the order “engine trials” should be given by the bridge正确答案:B解析:暂无解析

考题 You are planning the migration of an existing application to Windows Azure and SQL Azure.  The application produces report files at the request of remote systems.   Requests for report files will be placed into a single Windows Azure Queue.   You must minimize the compute resources and storage transactions required to process the requests.   You need to recommend an approach for processing the requests. What should you recommend?()A、 Create a worker role for each report file that constantly polls the queue for requests.B、 Create a workerrole for each report file that checks the queue at scheduled intervals for requests.C、 Create a single worker role that constantly polls the queue for requests and executes the requests on multiple threads.D、 Create a single worker role that checks the queue at scheduled intervals for requests and executes the requests on multiple threads.正确答案:D

考题 单选题In a four-stroke engines the camshaft rotates at ().A half the engine rotational speedB twice the engine rotational speedC the engine rotational speedD four times the engine rotational speed正确答案:C解析:暂无解析