【判断题】Francewas the first country to begin a railway tunnel project, along the Vienna-Trieste line.

【多选题】三种常用的电波传播方式 ：地波传播、天波传播、视距传播，请选择描述正确的内容：

【判断题】From Xining to Lhasa,the total length of the Qinghai-Tibet Railway is 1,956 kilometers.

【多选题】During the construction ofthe Beijing-Zhangjiakou Railway, Jeme Tien Yow________.

【判断题】A memo usually includes a header and the message.

【判断题】Passenger trains have superior track occupancy rights over freight trains.

【判断题】A business memo is the same as a business letter.

【多选题】Which of the following statements are true?

【单选题】PAS反应中使用的强氧化剂是________

【判断题】“=”是赋值运算符，它表示把左边的数值赋值给右边的变量。

【单选题】For how many years was Odysseus away from home?

【多选题】What are the main difficulties the engineers faced with in constructingthe Qinghai-Tibet Railway?

【判断题】Feulgen和PAS反应过程中都用到亚硫酸盐溶液清洗样本，目的是为了洗去未结合Schiff试剂

【多选题】________, known as backboneof modern war, were absolutely crucial to success of the first and second worldwars.

【判断题】George Stephenson, renowned as the “Father of Railways”, designed his first locomotive in 1814namedBlücher.

【单选题】下述关于衰落描述错误的是：

【判断题】The young girl, Xiangxue, in Tie Ning’s novella “O, Xiangxue”is a conductor on the train.

【多选题】Which of the following are the correct descriptions about the Hogwarts Express?

【判断题】Train and railway have appeared in the animation “Spirited Away”for six times.

【填空题】【图片】【图片】

【判断题】Python语言可以用于科学计算，不能用于数据分析。

【判断题】Schiff试剂的实质就是碱性品红

【判断题】Creatures in Greek Mythology are creatures with supernatural attributes, abilities and powers.

【单选题】Which of the following is True about heroes in Greek mythology?

【单选题】【图片】

【多选题】Which of the following reflect the intelligence of Beijing Zhangjiakou Intercity Railway?

【单选题】Feulgen反应中与Schiff试剂发生反应的是

【判断题】The world’s first recorded railway station was Crown Street railway station.

【多选题】In order to ensure the safety of passengers, ______

【判断题】The first modern bridge in China, which cost 5.4 million silver dollars, experienced its construction, being blown up and reconstruction.

【判断题】Python语言是一门具有开源特性的语言。

【单选题】哪个选项是Python安装第三方库的方法_______。

【判断题】Now, the high speed railway has become a striking ID of China’s high technology and peaceful rise under the Belt and Road Initiative.

【填空题】分压式偏置共射极放大电路如下图所示。已知RB1=30kΩ，RB2=10kΩ，RC=RE= 2kΩ，RL=3kΩ，UCC=20V，三极管的电流放大系数β=60， 计算静态工作点IB、IC。(保留小数点后三位有效数字)【图片】

【判断题】导入一个模块使用import这个关键字，例如:import turtle

【判断题】It's ok to use emotionally-charged language in writing a business memo.

【判断题】The subject line of a business memo needs to be brief and descriptive.

【多选题】视距传播(line-of-sight propagation，LOS propagation)是指在发射天线和接受天线间能相互“看见”的距离内，电波直接从发射点传播到接收点(一般要包括地面的反射波)的一种传播方式。 视距传播的距离一般为20～50Km，主要用于超短波及微波通信，请选择下面描述正确的答案：

【判断题】python语言中，语句print(“Hello World!")可以输出：Hello World!

【单选题】【图片】

【判断题】In May 1908,the Qing government set up the Beijing-Zhangjiakou Railway Bureau and appointed Jeme Tien Yow as chief engineer..

【单选题】Which of the following is a Greek hero?

【单选题】下列不属于组合数据类型的是()。

【判断题】Python语言的标识符是大小写敏感的，也就是说 Name 和 name 是两个不同的标识符。

【单选题】无色的Schiff试剂可与底物的________反应产生紫红色化合物

【多选题】无线通信距离的计算：自由空间传播时的无线通信距离有简单的计算方法：所谓自由空间传播系指天线周围为无限大真空时的电波传播，它是理想传播条件。电波在自由空间传播时，其能量既不会被障碍物所吸收，也不会产生反射或散射。 通信距离与发射功率、接收灵敏度和工作频率有关。[Lfs](dB)=32.44+20lgd(km)+20lgf(MHz)式中Lfs为传输损耗，d为传输距离，频率的单位以MHz计算。选择正确以下正确的答案：

【单选题】用于Feulgen反应的石蜡切片可提前保存在

【填空题】分压式偏置共射极放大电路如下图所示。已知RB1=30kΩ，RB2=10kΩ，RC=RE= 2kΩ，RL=3kΩ，UCC=20V，三极管的电流放大系数β=60，计算电压放大倍数。【图片】

【单选题】Feulgen 反应中盐酸水解的最佳时间为

【单选题】According to Joseph Campbell, all heroes have to undergo____ stages to be upgraded.