搜题请搜索小程序“爱下问搜题”
问题 单项选择题

压缩机主油泵振动发热或产生噪声的处理措施不正确的是（）。

A.油泵组装不良，重新按图组装

B.油泵与电动机轴不同心，重新找正对中

C.地脚螺栓松动，紧固地脚螺栓

D.管路脉冲振动，及时调低供油压力

答案

参考答案：D

听力题

先通读下面的短文，然后根据短文内容和所给首字母，在空格内填入一个适当的单词，使短文意思完整。所填单词在题后横线上必须完整写出。

According to the school rules, students should wear school uniforms. H      小题1: for most students, school uniforms are not e     小题2:what they like. “Why not wear the school uniform just one day a week? Always wearing the same clothes makes me feel t     小题3: of them.” A senior student from a high school said. Most students don’t like the school uniforms’ simple colors, b   小题4: designs and bad quality. And a teacher at a high school in Guangzhou said. “ A      小题5: a teacher and mother, I hope the school will improve the quality of school uniforms soon.” What has caused（导致）all these p      小题6:? Chen Hong, a uniform designer in Shenzhen, pointed out. “There are no professionals (专业人员) who work for students. “Besides, high quality means a h      小题7: price.” said Chen. “But in some schools the price for each student’s uniform is only 50 to 60 yuan. How can we make high quality clothes with so l      小题8: money?”

Even with these problems, uniform factories are working hard to change the s     小题9:. It won’t be long b     小题10: the perfect school uniforms come onto the market, which will help the students remember the history of their school and make them feel pleased with their school.
查看答案
填空题

突发公共卫生事件发生、发展、控制过程信息分为（）。
查看答案