4、电弧电流过零时电弧熄灭，而弧隙的绝缘能力要经过一定的时间恢复到绝缘的正常状态的过程为弧隙的恢复过程。

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高等继续教育 / 发电厂电气部分

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发电厂电气部分

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逮捕决定书，是人民检察院在办理公安机关移送审查的侦查案件的过程中，依法决定逮捕犯罪嫌疑人时所制作的文书。（）法律文书制作实务

23、阶级划分的主要标志是各种社会集团（） A. 在国家政权中的地位不同 B. 对生产资料的关系不同 C. 在社会劳动组织中的作用不同 D. 取得劳动产品方式和多寡不同特色社会主义理论

27. 纳税人购进设备因管理不善被盗，其进项税不得抵扣。（）正确错误中石油

关于学习契约评价，以下哪些理解是正确的？（）信息技术与教育

1、The fact that blind people can see things using other parts of their bodies apart from their eyes may help us understand our feeling about color. If they sense color differences, then perhaps we, too, are affected by color without knowing it. Salesmen have discovered by experience over a long period of time that sugar sells badly in green wrappings(包装), that blue foods are considered not agreeable to the taste, and that cosmetics(化妆品) should never be packed in brown. Their discoveries have grown into a whole subject of color psychology(心理学). Some of our preferences(偏爱) for colors are clearly psychological. Dark blue is the color of the night sky and therefore connected with calm, while yellow is a day color connected with energy and encouragement. Experiments have shown that colors, partly because they are connected with psychology, also have a direct effect on people’s mind. People in bright red surroundings show an increase in breathing speed, heartbeat and blood pressure; red is exciting. Pure blue has exactly the opposite effect; it is a calming color. Being exciting, red was chosen as the signal for danger, but a close study shows that a bright yellow can produce a more basic state of alarm, so fire engines in some advanced areas are now rushing around in bright yellow colors that stop buses, trucks and cars. 1. The passage tells us that salesmen have _ _ _ _ _ _ _ _ _ _ . A. discovered the relationship between color and psychology B. tried out colors on blind people C. found out that color affect sales D. developed a special subject of color psychology 2. It can be inferred from the passage that _ _ _ _ _ _ _ _ . A. what color we prefer depends on our state of mind B. foods sell well in green or blue wrappings C. blind people cannot sense color difference D. a bright yellow has exactly the opposite effect to red 3. If people are exposed to(置身于) pure blue, _ _ _ _ _ _ _ _ _ . A. their blood pressure rises B. they want to taste blue foods C. they will feel like buying things D. they won’t easily feel nervous 4. The most effective color in the passage for warning people is _ _ _ _ _ _ _ . A. red B. dark blue C. bright yellow D. green 5. Which of the following do you think is the best title of the passage? A. Colors and sales B. Colors and feelings C. The blind and colors D. Preferences for colors大学英语4

2[单选题] 关节腔叙述错误的是 A.是一个与外界开放的腔隙 B.是一个密闭的腔隙 C.由关节囊滑膜层和关节面共同围成 D.腔内含少量滑液人体解剖学