安全封被抽掉的原因？处理方法？

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问题问答题简答题

安全封被抽掉的原因？处理方法？

答案

参考答案：

原因：⑴转化风机开得太猛；⑵净化系统阻力增加，设备堵塞；⑶插板插得太猛；⑷焙烧突然停炉；

处理方法：⑴关小风机；⑵找出堵塞所在加以捣通；⑶插板应慢慢插入；⑷安全封被抽后，应关小风机，安全封加满水后再开大风机；

单项选择题

A 10-year-old girl visits the clinic for a checkup before entering school. The child’s mother questions the nurse about what to expect of her daughter’s growth and development at this stage. Which response is most appropriate

A. "Her physical development will be rapid at this stage, and rapid development will continue from now on. "
B. "She’ll become more independent and won’t require parental supervision. "
C. "Don’t anticipate any changes at this stage in her growth and development. "
D. "Friends will be very important to her, and she’ll develop an interest in the opposite sex. "

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选择题

中国气象局与交通部2012年10月15日联合发布全国主要公路气象预报：l5日20时至l6日20时，内蒙古中部的部分地区有沙尘天气。土壤风蚀是沙尘暴发生发展的重要因素，形成沙尘暴的条件主要是干旱、大风、对流旺盛，若对流层大气出现逆温现象可以抑制沙尘暴，读图完成下列问题。