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问题 多项选择题

以下各项关于支撑式支架结构特点的说法正确的是（）。

A、呈框型结构

B、顶梁较长，一般都没有前探梁

C、立柱多，一般为4～6根，且垂直顶梁支撑

D、支架后部有简单的挡矸装置，一般设有立柱复位装置，以承受指向煤壁方向的水平推力

答案

参考答案：A, C, D

填空题
根据短文内容，用方框内所给的单词的适当形式填入短文空格内，使短文意思正确、通顺，每词限用一次（每空一词）。并将所选单词填写在对话后面的横线上。
how,  safe,  thank,  play ,  be,  invent ,  no,  so ,  interest,  ask
Thomas Edison was a great American 小题1:.________. When he was a child, he was always 小题2:.________  questions and trying out new ideas. No matter 小题3:.________hard it was, he never gave up.Young Tom was in school for only three months. His teacher didn’t understand why he had 小题4:.________many strange questions. Most of them were not about his lessons. The teacher didn’t want to teach Tom any 小题5:.________. He asked Tom’s mother to take the boy home. Tom’s mother taught him to read and write, and she found him to 小题6:.________ a very good pupil. He learnt very fast and became very 小题7:.________ in science.
One day , he saw a little boy 小题8:.________ on the railway tracks at a station. A train was coming near quickly, and the boy was too frightened to move. Edison rushed out and carried the boy to 小题9:.________. The boy’s father was so 小题10:.________  that  he taught Edison to send messages by telegraph.
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单项选择题

对组织的政策、行为和产品持赞成意向和支持态度的公众对象属于（）

A.边缘公众

B.顺意公众

C.首要公众

D.次要公众
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