"Hidden" Species May Be Surprisingly
Common Cryptic species animals that appear identical but are genetically quite distant—may be much more widespread than previously thought. The findings could have major implications in areas ranging from biodiversity estimates and wildlife management, to our understanding of infectious diseases and evolution. Reports of cryptic species have increased dramatically over the past two decades with the advent of relatively inexpensive DNA sequencing technology. Markus Pfenninger and Klaus Schwenk, of the Goethe-Universitat, in Frankfurt, Germany, analyzed all known data on cryptic animal species and discovered that they are found in equal proportions throughout all major branches of the animal kingdom and occur in equal numbers in all biogeographieal A. The WCU are interbreeding those elephants. B. They are interbreeding species. C. They are two genetically distant species. D. They depend on each other for survival. [单选题]放射性同位素物位计在安装地点应有()。
A.警戒标志 B.专人检查 C.防护措施 D.人监督 [单选题]使用银行卡购买的车票办理改签和退票时,应在( )的车站窗口办理。
A.安装了二代身份证识别器 B.安装了POS机 C.安装了学生优惠读卡器 D.安装了二维条码扫描器 [单选题]漏发、错发、漏传、错传调度命令导致列车超速运行,未构成一般B类以上事故的,为()事故。
A.一般A类 B.一般B类 C.一般C类 D.一般D类 [单选题]化工工艺流程图中的设备用()线画出,主要物料的流程线用( )实线表示。
A.细,粗 B.细,细 C.粗,粗 D.粗,细 [单选题]经验法则表明,当一组数据对称分布时,在平均数加减 3 个标准差的范围之内大约有( )。
A.68%的数据 B.95%的数据 C.99%的数据 D.100%的数据 [判断题]机车停车位置,应以地面信号机或有关停车标志为依据。
A.正确 B.错误 [单项选择]0.14()0.139
A. < B. > C. = [单项选择]第六组:
患者,女,43岁,右下腹持续性疼痛5天,伴恶心、呕吐,呕出物为胃内容物。体温38.5℃。体检发现右下腹5cm×5cm大小肿块,触痛明显。 此时较合适的处理是 A. 急诊行阑尾切除术 B. 急诊手术脓肿引流 C. 肠道准备后行右半结肠切除术 D. X线钡灌肠 E. 暂不手术,保守治疗 [单项选择]指定代理人按照被代理人的指定行使代理权。()
[判断题]购买残疾人旅客专用票额的车票时,可不实行实名制
A.正确 B.错误 [单项选择]中医辨证为:
A. 气滞血瘀 B. 阳虚内寒 C. 气血虚弱 D. 肝肾虚损 E. 湿热下注 [单选题]查验固定资产所有权时,审计人员应采取的审计程序是()。[2008年初级、2009年中级真题]
A.将固定资产原值与全年总产量的比率与上年度该比率相比较 B.检查使用的折旧率是否正确 C.检查固定资产账、卡的设置情况 D.检查相关契约、财产税单和发票等凭证 [单选题]某供电局安全监察大队在检查XX施工单位10kVXX线防风加固工作时,发现在10kVXX线#21杆处进行切割作业时,氧气瓶和乙炔气瓶的距离放在一起,切割套管过短,导致气瓶的放置地点靠近热源,容易着火。遂责今其立即整改,要求其
2、氧气瓶和乙炔气瓶的放置地点不得靠近热源,应距明火 _____ (单选题)
A.5m B.6m C.8m D.10m [多选题]一般位置直线的投影特性是:( )。
A.三面投影都是倾斜的线段 B.三面投影都具有收缩性 C.三面投影都具有类似性 D.三面投影都具有显示性 [单项选择]女孩,4个月,因咳嗽3周、加重1周入院。病初为轻咳,伴低热、流涕,2周前热退,流涕减轻,但咳嗽逐渐加重,近1周出现阵阵剧烈咳嗽,咳时连续数十声,阵咳结束时有鸡鸣样回声。该患儿外周血常规可能表现是()
A. WBC正常,N和L分类正常 B. WBC偏低,L分类增高 C. WBC增高,嗜酸性粒细胞分类增高 D. WBC增高,N分类增高 E. WBC增高,L分类增高 [判断题]拒绝合闸的断路器不能投入运行。 ( )
A.正确 B.错误 [单选题]急救物品管理质量标准中的“三及时”是指( )
A.及时检查、及时补充、及时消毒灭菌 B.及时清洁、及时补充、及时消毒灭菌 C.及时维修、及时补充、及时消毒灭菌 D.及时检查、及时维修、及时消毒灭菌 E.及时检查、及时补充、及时维修 [单项选择]Questions 24 to 27 are based on the following news. At the end of the news item, you will be given 20 seconds to answer the questions.
Now listen to the news. Which statement is INCORRECT about the demonstration in London A. It was held on Trafalgar Square. B. There were at most 10,000 demonstrators. C. It was a peaceful demonstration. D. Abdull Fared participated in the demonstration. [判断题]在发生重大生产安全事故时,任何单位和个人都应当支持、配合事故的抢救,并提供一切便利条件。( )
A.正确 B.错误 我来回答: 提交
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