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Vibrio cholerae adherence to and colonization in the small intestine are essential step in the pathogenesis of cholera. At least one type of pili, known as TcpA, is required for the colonization process. This paper reports the electron microscopic evidence showing that V. cholerae 01 and 0139 serogroups can express at least 4 types of pili when incubated at 28℃ on AKI agar or CFA (pH6.8). Among the four types, three can be expressed by classical and El Tor strains of Vibrio cholerae 01: TcpA pili are peritrichous,being 7-8nm in diameter, 5-10μm in length, and form bundles of parallel undulating filaments of 0.5-0.8 μm wide and 10-15μm long; Type B are 3-4nm in diameter, up to 2μm long, and of wavy morphology; Type C are 7-8nm wide and 0.5-0.8μm long.

本文通过电子显微镜对01群霍乱弧菌古典生物型和El Tor生物型以及0139群霍乱弧菌研究发现，在培养基AKI和CFA(pH6.8)28℃培养条件下，01群EVC和CVC均可产生TcpA，B型和C型菌毛；0139群霍乱弧菌可产生TcpA和B型菌毛，与01群一致。

In this paper, the background of fake information diffusion in public crisis management was firstly analyzed, and then three basic propositions and three hypothesis of simulation were concluded. Then, the management countermeasures of fake information diffusion in public crisis were classified as fifteen types according to the types of strategy and executive ability, and then fifteen corresponding simulation schemes were put forward. Meanwhile, a management simulation model of fake information diffusion in public crisis was constructed and used to phenomenologically simulate the scenarios and validity of five among these fifteen management countermeasures. At last, these simulation results were contrasted and analyzed, and five novel but meaningful conclusions were drawn.

首先对公共危机伪信息特殊性及其管理复杂性进行分析，得出论文研究的三大基本命题与三大研究假设；在此基础上，一方面分析了混沌理论方法在公共危机伪信息管理仿真中的适用性，并根据混沌情景预测方法构建了公共危机伪信息扩散的管理仿真模型，另一方面依据所提出的基本命题与研究假设，从管理策略与管理执行力度两方面对公共危机伪信息管理模式进行分类，形成了十五个仿真方案；最后利用所构建的仿真模型其中的五个仿真方案的管理绩效与扩散情景进行唯象仿真，并对仿真结果进行横向对比分析，得出五大结论。

The natural enemies group, neutral arthropod group and phytophagy arthropod group of the two sub-systems were respectively analyzed and have found that all types of arthropods of the two sub-systems can be divided into three different types of groups. The first group is which living in two habitats and the species current is few impacted by the changes of habitats; The second group is which can living in two habitats in turn ,but can transfer to another in the time the habitats was deeply disturbed ;The third one can only living in one habitats and can make the another habitats as a temporary habitats.

两个亚系统的天敌类群、中性节肢动物类群、植食性节肢动物类群分别进行分析发现两个亚系统的各类群节肢动物均可划分为三种不同类型，第一种为栖居于两种生境且物种流受生境变化影响较小类群；第二种为可依次栖居于两个不同生境，生境的变化对其物种流产生较大影响；第三种为栖居于某一单一生境，但可将另一系统作为某一虫态的临时栖境。

The gold deposit types are com plicated,can be divided into five types;hydrothermal breccia gold deposit,similar beded disseminated gold deposit in limestone,old karst cave gold deposit,porphyry gold deposit and skarn gold deposit.The form of these gold deposits are related to Tongshi subvoleanie complex.

该区金矿形戚与铜石次火山杂岩体有关，区内金矿类型复杂，可划分为隐爆角砾岩带型金矿、似层状畏染状灰岩中金矿、古溶洞型金矿、斑岩型金矿、矽卡岩型金矿等5种矿化类型。

According to the location of pneumatization, pneumatized inferior turbinates were classified into three types : bulbous, lamellar, and extensive types.

HRCT是显示下鼻甲气化的最佳方法，可直接作出诊断并能帮助临床与其他原因造成的下鼻甲肥大进行鉴别。

The podlike fruit of any of these plants, varying in size, shape, and degree of pungency, with the milder types including the bell pepper and pimiento, and the more pungent types including the cherry pepper.

豆荚状胡椒任何一种有豆荚状果实的此类植物，大小、形状和辛辣程度不等，味道较温和的包括花椒和西班牙辣椒，较刺激的有樱桃椒

The morphology of polyembryonic rice IR36-Shuang could be differentiated into 2 types: uncomplete twin seedlings and complete twin seedlings. There were 2 types in uncomplete twin seedlings, i.

IR36-双在双胚苗性状的表现形态上有其特异性，在同一纯合株系的群体内双胚苗的苗位有非完全双苗和完全双苗两种类型。

The 28 pollen types of Polygonaceae in China have been arranged in their evolutionary sequence. Evolutionary trends of pollen types of Polygon...

该项研究不仅为化石花粉的研究提供了鉴定依据，而且为中国蓼科孢粉地理学的研究提供了理论基础。

It presents test results of performance for three structural types of cement stabilized macadam including suspend-dense structure framework-dense structure and framework-pore structure, for two structural types of lime fly-ash macadam including suspend-dense structure and framework-dense structure, and for cement stabilized soil. By the probability analysis of Weibull on the results of fatigue test, the paper has a serial of fatigue prefigurative models. What's more, amends these models linking to the factual pavement performance.

在对三种结构的水泥稳定碎石(悬浮密实结构、骨架密实结构、骨架空隙结构)、两种结构的二灰稳定碎石(悬浮密实结构、骨架密实结构)、均匀密实结构的水泥稳定细料土进行室内三分点加载疲劳试验的基础上，采用威布尔分布理论对疲劳数据进行处理，得到各自的室内疲劳预估模型，并结合实际路面的情况对室内疲劳预估模型进行修正。

As to the first part, the thesis explains the types (Operative, Reflective, Constructive and Immersive) and the levels (Directive Interactive, Processive and Compositive) of content interaction. Then it clarifies the types and the levels (Directive, Collaborative and Social) of interperson interaction.

针对确定交互活动类型和层次的环节，文章对内容交互的类型(操作式、反思式、构建式和浸入式)、层次(D层次、P层次、I层次、C层次)和实现途径以及人际交互的类型(课程内部交互、课程外交互)、层次(D层次、C层次、S层次)和实现途径逐一做了说明。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。