问题
单项选择题
关于空调系统叙述错误的是（）
A.双区域空调可以实现左右出风口温度随意调节。
B.自动空调有自检、读故障码和读版本号功能。
C.空调系统采用固定排量压缩机，膨胀阀系统。
D.自检功能是检测面板显示功能是否正常。
答案
参考答案：A
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关于空调系统叙述错误的是（）
A.双区域空调可以实现左右出风口温度随意调节。
B.自动空调有自检、读故障码和读版本号功能。
C.空调系统采用固定排量压缩机，膨胀阀系统。
D.自检功能是检测面板显示功能是否正常。
参考答案：A
A Stress (压力) is everywhere in our everyday life. Men, women, the young and the old sometimes have stress. The most important reasons of stress are: death, diseases, exams, making money, changing jobs, ending friendships and so on. How do you know whether you have stress? Could you give your answers to the following questions?
Doing relaxing exercise, talking with friends and listening to light music are all usual ways relieving (减轻) stress. However, doctors now say that there are easier ways — people should laugh and smile more often. When you laugh and smile, your body relaxes. They also say that people, especially men, should cry more often, because crying is the natural way of relieving stress. 小题1:Which of the followings is NOT one of the most important reasons of stress according to the passage?
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，其中的k为板的屈曲系数，下列各项与屈曲系数无关的为（）。