特点

A Some environmentalists are against the project on biological grounds.B What do the world's longest bridges have in common?D They're what will keep the bridge from going anywhere.E The second job will be to pull two sets of steel cables across the strait, each set being a bundle of 44,352 individuals steel wires.F They will tip up the scales at 166, 500 tons more than half the bridge's total mass.__2__. They're suspension bridges, massive structures built to span vast water channels or gorges. A suspension bridge needs just two towers to should the structure's mammoth weight,..

B。 分析：思路特点：注意空格后句中的词语使用特点：空格后面连续两句都涉及到了"suspension bridge/吊桥"因此判断空格处出现对"吊桥"进行讲述的句子的可能性最大，但被选项中没有该词出现，注意到空格后的句子中出现了代词They，该词的出现表明前面有复数的名词与之相呼应，而且They内容是指"桥"，因此排除A，C和E， F（没有与They呼应的内容），所以答案是B。

A Some environmentalists are againstthe projecton biological grounds（on..grounds/on the grounds of..根据）.D They're what will keep the bridge fromgoing anywhere.F They will tip up the scales at 166, 500 tons – more than half the bridge's totalmass.Getting these cables up will be something. It is not just their length –totally 5.3 kilometers – but their weight.

F。 分析：思路特点：注意空格后句中的词语使用特点：空格前出现了their length， their weight，根据前句内容判断their指"these cables"，空格前句内容的重点在重量上， F具体提到了有关重量的数据166， 500 tons，因此F是答案。

A Some environmentalists are against the project on biological grounds.B What do the world's longest bridges have in common ?D They 're what will keep the bridge from going anywhere.E The second job will be to pull two sets of steel cables across the strait , each set being a bundle of 44,352 inPiduals steel wires.F They will tip up the scales at 166, 500 tons – more than half the bridge 's total mass.__2__. They're suspension bridges , massive structures built to span vast water channels or gorges. A suspension bridge needs just two towers to should the structure's mammoth weight,..

B。 分析：思路特点：注意空格后句中的词语使用特点：空格后面连续两句都涉及到了"suspension bridge/吊桥"因此判断空格处出现对"吊桥"进行讲述的句子的可能性最大，但被选项中没有该词出现，注意到空格后的句子中出现了代词They，该词的出现表明前面有复数的名词与之相呼应，而且They内容是指"桥"，因此排除A，C和E， F（没有与They呼应的内容），所以答案是B。

A some environmentalists are against the project on biological grounds.b what do the world's longest bridges have in common?d they're what will keep the bridge from going anywhere.e the second job will be to pull two sets of steel cables across the strait, each set being a bundle of 44,352 individuals steel wires.f they will tip up the scales at 166, 500 tons – more than half the bridge's total mass.__2__. they're suspension bridges, massive structures built to span vast water channels or gorges. a suspension bridge needs just two towers to should the structure's mammoth weight,..

b。 分析：思路特点：注重空格后句中的词语使用特点：空格后面连续两句都涉及到了"suspension bridge/吊桥"因此判定空格处出现对"吊桥"进行讲述的句子的可能性最大，但被选项中没有该词出现，注重到空格后的句子中出现了代词they，该词的出现表明前面有复数的名词与之相呼应，而且they内容是指"桥"，因此排除a，c和e， f（没有与they呼应的内容），所以答案是b。

objective:to study the changes of dynamic electrocardiogram in patients with brain injury.methods:fifty-six patients with acute brain injury were recruited in this study.the glasgow coma scale, the initial computed tomogram and ambulatory electrocardiogram were performed in all subject.data were analyzed according to different place and severity of brain injury.results:ecg abnormalities were found in 32 patients out of 56 patients with acute head injury(57.14%).

目的：观察脑损伤患者的动态心电图改变，了解急性脑损伤致心电异常的特点及其与损伤部位和严重程度的关系。方法：选取我院急性脑损伤患者56例，经glasgow评分分型，脑ct确定损伤部位，并行24h动态心电图检查，观察急性脑损伤后心电异常的发生情况，并根据脑损伤部位和严重程度分组观察，以了解其心电异常的特点。

The structured properties of tridiagonal inverse M-matrices are then studied in detail by using graph theory and combinatorial mathematics, and a sufficient condition for a nonnegative tridiagonal matrix to be an inverse M-inatrix is given.

第一部分分析证明了逆M-矩阵的结构特点和在Hadamard积下的封闭性；第二部分分析几类特殊矩阵的结构特点，以及它们逆矩阵的构造方法；第三部分研究对称不定矩阵秩一校正的Bunch-Kaufman分解和相应的算法。

Based on the WM-model, the various stages of SPIF process was studied and the forming characters have been realized. Based on the SM-model of the truncated cone, the blank thickness element was sub-meshed into three levels. And through the forming simulation of the process, access to the plate stress and strain of the different regions in forming, and proposed the establishment of a sub-regional mechanism to explain the incremental forming, that is, in different regions, sheet deformation is different. In the main region which reflects the major character of SPIF, the deformation pattern is the composition of bending and extrusion.

基于完整有限元分析模型对渐进成形过程的各阶段进行分析，从而全面认识渐进成形的特点；基于方锥台件局部有限元分析模型，并将板材厚度方向的单元细分为三层，通过成形过程仿真，获取成形中，板材不同区域的应力、应变情况，提出并建立分区域的渐进成形机理解释，即，在不同区域，板材的变形方式是不同的，其中，对体现渐进成形主要特点的方锥台件和圆锥台件的侧壁充分变形区域，其变形方式是拉伸-弯曲复合变形。

The development and design features of the high bypass ratio turbofan engine in foreign are comprehensively summarized.

较为系统地总结了国外大涵道比涡扇发动机的研制特点和设计特点。

According to the request of construction features, processing spot, size precision, surface roughness and productivity that diesel engine air cylinder, sets the machine tool for single location horizontal type modular machine tool. Considered to the factor of the size precision, surface roughness, scrap removes and productivity and so on of the work piece, selects the Hard alloy not grind type surface milling cutter.

根据柴油机气缸体的结构特点、加工部位、尺寸精度、表面粗糙度及生产率等要求，确定该机床为单工位卧式组合机床；考虑工件尺寸精度，表面粗糙度，切屑的排除及生产率等因素，选用硬质合金不重磨式面铣刀；根据工件的尺寸、特点及其材料选择切削用量；然后，再经过切削用量来确定组合机床的通用部件；最后进行组合机床的总体设计。

With these requirements, the underfloor air supply system has come to use. In this paper, the work principles and characters are discussed, the underfloor plenum for air supply and characteristic of air supply are analyzed. Based on the characteristic of air supply, features of IAQ, thermal comfort, and energy-saving are presented.

本文探讨了架空地板送风系统的工作原理和特点，分析了该系统的送风静压层和送风特性，并从这种送风特性出发，综述了架空地板送风系统在室内空气品质、热舒适性和节能等方面的特点。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。