使用721型分光光度计时仪器在100%处经常漂移，是因为（）。 A.电源不稳定 B. 发布时间：2017-08-17 13:37 │ 来源：www.tikuol.com 题型：单项选择题 A1/A2型题 问题： 使用721型分光光度计时仪器在100%处经常漂移，是因为（）。A.电源不稳定B.保险丝断了C.稳压电源输出导线断了D.电流表动线圈不通电E.潮湿
题型：单项选择题 A1/A2型题 有关20世纪30年代法西斯的局部侵略，下列说法错误的是A．九一八事变是世界上最早的法西斯侵略B．国联成为推行绥靖政策的工具C．西班牙处于孤立无援的境地D．法西斯的侵略野心越来越大 查看答案
题型：单项选择题 A1/A2型题 完形填空。 Every summer, hundreds of thousands of students travel to other countries looking for work and adventure. Most of the opportunities are in 1 work. The pay is usually poor, but most people work 2 for the thrill of travel. You can pick grapes in France, entertain kids on American summer camps,and, of course, there are always 3 in hotels and restaurants. But it is not as easy as it used to be to find work. Unless you speak the language of the country well,there will be very 4 openings. For example, when you arrive to wash dishes in a restaurant in Paris, the owner will 5 you to speak French. British students only have a language 6 for jobs in the USAand Australia. Not every one 7 the experience. Sarah James was once responsible for forty American children inEurope. During the 8 , one child lost his passport; four children were lost in Madrid for a whole day; the whole group was thrown out of one hotel because of the 9 they made. Sarah says, "It really was a 24-hour-a-day job since the kids never 10 ! And the pay was awful. It wasn't worth it." The trouble is that 11 expect to have an easy time of it. After all, they see it as a 12 . In practice,though, they have to work hard. At the same time, all vacation work is casual work, and jobs are 13 only when the hotel, the restaurant, or the campsite is busy. But students have few employment 14 . As soon as the holiday season finishes, companies will get rid of them. And if their employer doesn't likethem, they'll be 15 , too.( ) 1. A. seasonal( ) 2. A. hard( ) 3. A. customers( ) 4. A. good ( ) 5. A. teach ( ) 6. A. program( ) 7. A. has ( ) 8. A. trip( ) 9. A. promise( )10. A. cried ( )11. A. children( )12. A. job ( )13. A. countless( )14. A. experiences( )15. A. dismissedB. mentalB. voluntarilyB. visitorsB. newB. expectB. lessonB. enjoysB. flightB. progressB. studiedB. studentsB. lessonB. availableB. rulesB. charged C. professionalC. abroadC. jobs C. attractiveC. allowC. advantageC. forgetsC. discussionC. complaintC. sleptC. employersC. holidayC. interestingC. plansC. fined D. formal D. continuously D. parties D. few D. forbid D. exam D. remembers D. ceremony D. noise D. helped D. parents D. shame D. boring D. rights D. punished 查看答案
题型：单项选择题 A1/A2型题 有关分裂情感性精神障碍，以下说法错误的是（）A.分裂症状和情感症状同时存在又同样突出B.包括躁狂型、抑郁型、混合型3种亚型C.分裂症状与情感症状出现与消失的时间比较接近D.分裂症状为主要临床相的时间不能少于1个月E.起病较急、多为青壮年、女性多于男性 查看答案
题型：单项选择题 A1/A2型题 沃家庭A计划80元套餐包含（）固话与2G手机共享时长，宽带速率（）包月，超出后每分钟（）元；A计划135元套餐，宽带速率（）包月，共享时长（）分钟，超出每分钟（）元。包含固话、2G手机月租，（），（）费用。 查看答案