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{{B}}Text{{/B}} In Britain, winter is the season not only for visits to the theatre, opera, concerts and ballet, but also for shopping or for sightseeing. London, one of the{{U}} (26) {{/U}}cities in the world, has plenty to offer during the winter months, {{U}} (27) {{/U}}in the way of entertainment—and the{{U}} (28) {{/U}}act like a magnet with{{U}} (29) {{/U}}array of presents for the Christmas{{U}} (30) {{/U}}, followed by large scale bargains in the January{{U}} (31) {{/U}}. But it’s not only London that{{U}} (32) {{/U}}value shopping—most of our suburban and{{U}} (33) {{/U}}centres have just as much to offer to t A. sales B. bargains C. selling D. trading [简答题]什么是精馏的原理？
[单选题]居民人均可支配收入从16500增加到____元。
A.35000 B.35100 C.35200 D.35300 [单选题]下列关于光缆线路障碍抢修流程的表述，不正确的为()。
A. 在已确定光缆线路故障后，在测试验证后通知线路维护人员抢修； B. 故障发生，在未确定线路、设备故障时，不参与故障查找工作； C. 到达故障点后，查清故障类型并进行抢通工作； D. 抢修结束后，必须修改系统资源； [单选题] 一个转向架上有(___)个停放制动缸。(1.0分)
A.A.2 B.B. 6 C.C. 8 D.D. 10 [单项选择]新型隐球菌主要的毒力因子是（）
A. 黑色素 B. 荚膜甘露糖蛋白 C. 荚膜多糖 D. 甘露醇 E. 外毒素 [多选题]（ ）可不使用操作票。
A.事故紧急处理 B.拉合断路器（开关）的单一操作 C.计划工作 D.线路停电； [简答题] THE PARTY GENE
Steven Benner jokingly calls himself a dilettante (业余艺术爱好者). A biochemist at the University of Florida in Gainesville, Benner learns a wide range of disciplines, from bioinformatics to astrobiology. His aim is to gain insight into the basic chemical rules that govern how life works — both here and, ultimately, on other planets. But although science drew his gaze to the skies, it was alcohol that brought him back down to Earth. Or, to be more exact, the enzymes that can both make and consume it.
Alcohol dehydrogenase (脱氢酶) is best known as the enzyme (酶) that breaks down alcohol in the body, and as such it has been studied exhaustively. But Benner and other researchers in the field have now turned to its evolution, and their work is providing fresh insight into the puzzle of why some creatures, such as yeast, came to make alcohol and why so many others, including ourselves, can tolerate it.
Alcohol dehydrogenase — ADH for short —
[单项选择]PPAP提交的等级有（）级
A. 五级 B. 四级 C. 三级 [单选题]大型养路及施工机械作业，如施工机械不超出机车车辆上部限界，且作业人员及所持机具与接触网带电部分保持( )m以上距离时，接触网可不停电。
A.1 B.2 C.3 D.4 [单选题]铬在水中的最稳定价态是( )。
A.六价 B.三价 C.二价 D.零价 [判断题]―年8月24日起实施的车辆分公司《禁、控烟管理规定》中指出，各线路日检站点及总调驻勤地点为车辆分公司管辖区域内的重点防火区域，禁止吸烟。（ ）
A.正确 B.错误 [多选题] 胸外心脏按压，按压用力方式正确的是（）
A.按压应平稳，有节律地进行，可以间断。 B.不能冲击式的猛压。 C.下压及向上放松的时间应相等 D.垂直用力向下，不要左右摆动。 [判断题]在飞行区内清洁航空器货舱时，不允许直接将货舱杂物清扫在机坪上。上述说法是否正确？
A.正确 B.错误 [单项选择]有5人报名参加3项不同的培训，每人都只报一项，则不同的报法有（）。
A. 243种 B. 125种 C. 81种 D. 60种 E. 以上结论均不正确 我来回答: 提交
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