压缩机的检修周期，每运行（）h进行一次中修。A.1100～2000； B.2100～ 发布时间：2017-11-25 17:24 │ 来源：www.tikuol.com 题型：单项选择题 问题： 压缩机的检修周期，每运行（）h进行一次中修。A.1100～2000；B.2100～3000；C.4500～6000；D.13000～18000
题型：单项选择题 完形填空。 Every few months, thousands upon thousands of people choose to leave work, skip school, and come together to celebrate... The people come in all 1 and sizes throughout the world. What do they 2 ? It doesn't matter. The description above is related to 3 and celebrations all over the world; indeed, it may be a universal way of looking at almost any celebration. Though the number of people joining in may 4 , the spirit of the event is 5 to stay the same. The reason is that we 6 countless hours celebrating birthdays and other special days to build 7 between one another. Holidays and celebrations bring people 8 . When people celebrate something, they ignore prejudice and 9 their shyness; celebrations bring people together 10 of who those people are. 11 on serious occasions where we remember past tragedies or the 12 of a loved one, friends and family-and sometimes even strangers -- come together to remember and 13 one another. Different celebrations involve different emotions (情感) and qualities, from 14 to dancing. The important thing is not that we are throwing a party, but rather that we are coming together as one 15 and one world, to celebrate together. Even in ancient 16 , celebrations were used to bring people together. The Ancient Greeks had the Olympics, which helped bring 17 among warring countries and states. The Greeks actually laid down all of their arms during the games! In an ancient era (纪元) where war was extremely common, it is 18 to see the power that the Olympics had on warring parties! Indeed, such is the case today as well. All such holidays make us forget the troubles we 19 and allow us to be happy and experience the peace that is required to improve and help the world. If only we held 20 every day... ( )1. A. dimensions ( )2. A. do ( )3. A. holidays ( )4. A. enlarge ( )5. A. lonely ( )6. A. keep ( )7. A. homes ( )8. A. out ( )9. A. forget ( )10. A. careful ( )11. A. But ( )12. A. worry ( )13. A. support ( )14. A. laughing ( )15. A. country ( )16. A. times ( )17. A. safety ( )18. A. important ( )19. A. face ( )20. A. games B. shapes B. want B. Sundays B. decrease B. impossible B. spend B. impressions B. in B. remember B. caring B. Even B. meeting B. mistake B. singing B. grade B. states B. peace B. strange B. make B. wars C. lengths C. celebrate C. Mother’s Day C. matter C. bound C. kill C. bridges C. together C. cover C. regarding C. Only C. loss C. recognize C. happiness C. custom C. events C. competition C. unbelievable C. takeC. parties D. heights D. think D. Father’s Day D. change D. likely D. find D. acquaintances D. up D. exhibit D. regardless D. And D. birth D. praise D. tears D. society D. stories D. belief D. believable D. avoid D. celebrations 查看答案
题型：单项选择题 女，48岁。半年以来自觉乏力，上腹不适，隐痛，食欲减退，间断出现黑便，无呕血，体重下降约8kg。既往无胃病史。查体：上腹部轻压痛，肝脾未触及，移动性浊音（-），大便潜血（+）。首先考虑的诊断是（）A.慢性萎缩性胃炎B.食管静脉曲张破裂出血C.胃癌伴出血D.应激性溃疡出血E.消化性溃疡出血 查看答案
题型：单项选择题 单向琼脂扩散法是将相应的A．抗原均匀地混入琼脂糖凝胶内制板B．抗体均匀地混入琼脂糖凝胶内制板C．补体均匀地混入琼脂糖凝胶内制板D．抗原抗体复合物均匀地混入琼脂糖凝胶内制板E．补体抗体复合物均匀地混入琼脂糖凝胶内制板 查看答案