问题 多项选择题

心式锅炉给水泵的结构形式及特点为()。

A.分段式多级离心泵

B.单级双吸离心泵

C.泵的扬程不大

D.流量可随负荷调节

答案

参考答案:A, C, D

解析:

离心式锅炉给水泵是锅炉给水专业用泵,也可以用来输送一般清水。其结构形式为分段式多级离心泵。锅炉给水泵对于扬程要求不大,但流量要随锅炉负荷而变化。

阅读理解

Harry, Tony, Collins, Jesse和Jack 几位同学欲提高学习成绩,故针对自己的情况上网找寻适合自己学习方法与资料。

首先,请阅读下面网页上信息。

A. Study Skills Self-help Information - Virginia Tech - Articles and self-assessment tests covering scheduling and time management, memory techniques, note-taking, reading, and setting up a good studying environment.

B. Academic Tips - Helping students manage time, take better notes, study more effectively, improve memory, take tests and handle the stresses of senior life.

C. Neuromod - Online Memory Improvement Course - It is possible to improve one’s memory performance in specific areas by applying memory techniques. This site explain a number of systems ranging from simple to sophisticated. The training steps are clearly laid out and in most cases online training software is provided.

D. Studying Revising Exams - One-page summary of studying, examination, and writing techniques. A collection of articles about good study habits with how-to suggestions.

E. Learning Skills - University of Victoria - Copyrighted e-books with tips on organizing notes, reading, time and study management, exam preparation and writing, writing assignments, and study strategies.

F. Study Guides  - Collection of academic study guides. Topics include classroom and study preparations; studying, writing and reading skills; math and science skills; evaluating and using web content; and preparing for tests. Authored, maintained, and revised by Joe Landsberger.

现在,请阅读下面的信息,根据他们的实际情况,进行信息匹配。请在答题卡上将对应题号的相应选项字母涂黑。其中F用CD代表。

小题1: Tony wants to better himself by means of taking notes, time management and so on. He also feels like solving the problem of heavy pressure in study.

小题2: Harry wants to improve himself through the ways of time management, memory skills etc., especially he can check himself in time and can find himself better learning surroundings..

小题3: Jesse will find some suggestions on how to make notes and how to do his writing homework.

小题4: Collins focuses on his future exams, so he would like to get some instructions for his science study and use some materials on the Net.

小题5: Jack hopes to train himself systematically to keep what he learns in mind a longer time.

单项选择题