环氧树脂粘结剂配制时，是将环氧树脂放在容器内，再把容器放在盛_爱下问搜题

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问题单项选择题

环氧树脂粘结剂配制时，是将环氧树脂放在容器内，再把容器放在盛水的铁盒中，用电炉间接加热到80°以下，而不直接加热是因为（）。

A、直接加热，会使局部过热而影响粘结性能

B、直接加热会使成分不均匀，而影响流动性

C、一次性制量不宜过多

D、直接加热会燃烧

答案

参考答案：A

阅读理解

阅读理解。

STUDY CENTER COURSES

                                                        From Paragraph to Essay
     Of particular relevance to students who wish to improve their organizational skills and who feel that
their final product is never clear enough.
                                                                                                                    Thursday 10:00-12:00
                                                                                                                     Kiran Singh

                                                            Source Material
     How do you gather information for a project or paper?A practical course which looks at sources of
information and how to use cataloguing systems.
                                                                                                                      Monday10:00-11:00
                                                                                                                      Kiran Singh

                                                            Express Yourself
     An advanced course suitable for students who are about to step into organizations where they may have
to voice their opinions often.
                                                                                                                       Monday 12: 00-2: 00
                                                                                                                       Dave Parrin

                                                        Dave Parrin Media Use
     Open to all students, this course focuses on many ways we can bene fit from the radio and television.
Group Projects form part o f course.
                                                                                                                      Tuesday 9: 00-11: 00
                                                                                                                      Steve Ansell

                                                             The Short Story
     A research into the world o,popular writers. One story is selected for adaptation into a short play and
group performance. Pre-arranged groups welcome.
                                                                                                                        Thursday11:00-1:30
                                                                                                                        Mrs. Owen

                                                          Caught for Speeding
     Open to all students. Simple eye exercises to help you with speed reading. How to be selective on the
page. Using headings,topic sentences and paragraphs for easy access.
                                                                                                                     Wesnesday11:00-1:00
                                                                                                                      Mrs. Owen

                                                           Tense about Tenses
     For those who worry about their use of words-a look at tenses and other aspects of the language
through poetry and song. Good voice helps but not a must.
                                                                                                                      Saturday 10:00-12:00
                                                                                                                      Steve Ansell

1. If a student takes the course The Short Story, he can't take _____.

A. From Paragraph to Essay
B. Tense about Tenses
C. Source Material
D. Media Use

2. Which of the courses can develop the students' team work?

A. From Paragraph to Essay.
B. The Short Story.
C. Caught for Speeding.
D. Express Yourself.

3. From where can a student read this?

A. On the radio.
B. On television.
C. In a local newspaper.
D. On a school notice board.

单项选择题

具有行呼吸作用的气是（）

A.元气

B.宗气

C.营气

D.卫气

E.脏腑之气