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(请定好时间10分钟以内做完) Finally, some good news about airplane travel. If you are on a plane with a sick passenger, you are unlikely to get sick. That is the 26 of a new study that looked at how respiratory ( 呼吸道 ) viruses 27 on airplanes. Researchers found that only people who were seated in the same row as a passenger with the flu, for example — or one row in front of or behind that individual — had a high risk of catching the illness. All other passengers had only a very 28 chance of getting sick, according to the findings. Media reports have not necessarily presented 29 information about the risk of getting infected on an airplane in the past. Therefore, these new findings should help airplane passengers to feel less 30 to catching respiratory infections while traveling by air. Prior to the new study, litter was known about the risks of getting 31 infected by common respiratory viruses, such as the flu or common cold, on an airplane, the researchers said. So, to 32 the risks of infection, the study team flew on 10 different 33 in the US during the flu season. The researchers found that passengers sitting within two seats on 34 side of a person infected with flu, as well as those sitting one row in front of or behind this individual, had about an 80 percent chance of getting sick. But other passengers were 35 safe from infection. They had a less than 3 percent chance of catching the flu. A) accurate B) conclusion C) directly D) either E) evaluate F) explorations G) flights H) largely I) nearby J) respond K) slim L) spread M) summit N) vividly O) vulnerable
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【单选题】关于滋养细胞疾病,以下说法正确的是
A.
侵蚀性葡萄胎可发生在流产之后
B.
绒毛膜癌可发生在葡萄胎之后
C.
最主要的死亡原因是肺转移
D.
绒毛膜癌最早出现的是脑转移
E.
葡萄胎清除后应随访6个月
【单选题】佛尔哈德法测定 时,溶液中忘记加硝基苯,在滴定过程中剧烈摇动,使结果 ( )
A.
偏低
B.
偏高
C.
无影响
D.
正负误差不一定
【单选题】螺杆钻具上的(T)有开启和关闭两个位置,当立管内压力泥浆流经(T)时,压力泥浆产生的推力将阀芯压下,(T)关闭,这时处于关闭位置,钻具转动。而当泥浆泵停泵,泥浆不流动,弹簧把阀芯顶起,这时处于关启位置。立管内的泥浆进入套管,起下钻柱不致使泥浆溢于井台上。T为()。
A.
旁通阀
B.
水眼
C.
泄油器
D.
喷头
【单选题】下钻时,井架工扣好吊卡发出上提信号后,上提立柱出钻杆盒,立柱的下外螺纹接头高出井口钻具内螺纹接头()刹车。
A.
0.1~0.2m
B.
0.2~0.3m
C.
0.3~0.5m
D.
0.5~1.0m
【单选题】关于妊娠滋养细胞肿瘤,下列哪项正确?( )
A.
侵蚀性葡萄胎可发生在流产后
B.
绒毛膜癌可发生在葡萄胎之后
C.
前次妊娠为异位妊娠,不发生绒毛膜癌
D.
绒毛膜癌最早出现的是脑转移
E.
以上都不对
【单选题】以鲜奶作为良好食物来源的营养素是
A.
B.
C.
D.
【单选题】佛 尔哈德法测定 Cl – 时,溶液中忘记加硝基苯,在滴定过程中剧烈摇动,将使结果
A.
偏低
B.
偏高
C.
无影响
D.
正负误差不一定
【判断题】佛尔哈德法测定酸性试样中的Cl - 时,溶液中忘记加硝基苯保护沉淀,分析结果会偏低。(    )
A.
正确
B.
错误
【判断题】以鲜奶作为良好食物来源的营养素是铁。
A.
正确
B.
错误
【判断题】井口工具是钻井施工时,用来起下钻柱,接钻铤、钻杆及各种井下工具上、卸螺纹作业的专用工具。
A.
正确
B.
错误
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