题目内容

某条高速公路全长80km,路段上有6个互通立交,并有1.8km和2.1km的长隧道两座。根据提供的交通量,两个隧道都设计有通风、照明及隧道变电所,并有完整的交通安全设施、监控系统及通信系统。该路设有一处监控分中心,能实现隧道变电所无人值守,能和省监控中心实现联网互传信息,以及为运营管理提供信息。 根据此案例场景,回答下列问题: 缆索护栏属于( )。

A. 刚性护栏
B. 半刚性护栏
C. 柔性护栏
D. 一般护栏

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Read the following text. Choose the best word or phrase for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. With Airbus’s giant A380 airliner about in to take to the skies, you might think planes could not get much bigger — and you would be right. For a given design, it turns (21) , there comes a point where the wings become too heavy to generate (22) lift to carry their own weight. (23) a new way of designing and making materials could (24) that problem. Two engineers (25) University College London have devised an innovative way to customise and control the (26) of a material throughout its three-dimensional structure. In the (27) of a wing, this would make possible a material that is dense, strong and load-bearing at one end, close to the fuselage, (28) the extremities could be made less dense, lighter and more (29) . It is like making bespoke materials, (30) you can customise the physical properties of every cubic millimetre of a structure. The new technique combines existing technologies in a(n) (31) way. It starts by using finite-element-analysis software, of the type commonly used by engineers, (32) a virtual prototype of the object. The software models the stresses and strains that the object will need to (33) throughout its structure. Using this information it is then (34) to calculate the precise forces acting on millions of smaller subsections of the structure. (35) of these subsections is (36) treated as a separate object with its own set of forces acting on it — and each subsection (37) for a different microstructure to absorb those local forces. Designing so many microstructures manually (38) be a huge task, so the researchers apply an optimisation program, called a genetic algorithm, (39) This uses a process of randomization and trial-and-error to search the vast number of possible microstructures to find the most (40) design for each subsection.

A. stand
B. sustain
C. understand
D. withstand

Read the following text. Choose the best word or phrase for each numbered blank and mark A, B, C or D on ANSWER SHEET 1. With Airbus’s giant A380 airliner about in to take to the skies, you might think planes could not get much bigger — and you would be right. For a given design, it turns (21) , there comes a point where the wings become too heavy to generate (22) lift to carry their own weight. (23) a new way of designing and making materials could (24) that problem. Two engineers (25) University College London have devised an innovative way to customise and control the (26) of a material throughout its three-dimensional structure. In the (27) of a wing, this would make possible a material that is dense, strong and load-bearing at one end, close to the fuselage, (28) the extremities could be made less dense, lighter and more (29) . It is like making bespoke materials, (30) you can customise the physical properties of every cubic millimetre of a structure. The new technique combines existing technologies in a(n) (31) way. It starts by using finite-element-analysis software, of the type commonly used by engineers, (32) a virtual prototype of the object. The software models the stresses and strains that the object will need to (33) throughout its structure. Using this information it is then (34) to calculate the precise forces acting on millions of smaller subsections of the structure. (35) of these subsections is (36) treated as a separate object with its own set of forces acting on it — and each subsection (37) for a different microstructure to absorb those local forces. Designing so many microstructures manually (38) be a huge task, so the researchers apply an optimisation program, called a genetic algorithm, (39) This uses a process of randomization and trial-and-error to search the vast number of possible microstructures to find the most (40) design for each subsection.

A. is to
B. should
C. would
D. has to

案例分析题女性,35岁,因多食,肥胖,闭经,血糖高1年就诊,体检:身高160cm,体重75kg,腹部,臀部脂肪堆积,紫纹(+),血压:170/100mmHg,血糖10.1mmol/L,诊皮质醇增多症。 病人于手术后1年随诊,下述哪种情况不支持治疗有效()

A. 向心性肥胖减轻
B. 月经恢复
C. 空腹血糖6.8mml/L
D. 血压,150/90mmHg
E. 血皮质醇早8点510mmol/L(正常165~441mmol/L),下午4点480mmol/L

Directions: Read the following text carefully and then translate the underlined segments into Chinese. Write your translation clearly on ANSWER SHEET 2. Electronic or "cyber" warfare holds the promise of destroying an army’s — or even a whole nation’s — ability to function without hurting human life. The technology is reaching the point, however, where cyber warfare may be decisive in its own right. 61) In highly centralized military operations, communications and data management have become essential tools linking individual small units and the central command structure. The neutron bomb is one of the most horrid weapons ever devised: It doesn’t damage property; it only kills higher life-forms. 62) Wouldn’t the opposite be wonderful, a device like the robot’s ray in The Day the Earth Stood Still, which melts down weapons but not soldiers Electronic or "cyber" warfare — hacking into an enemy’s computers, jamming radio transmissions, and the like-holds that promise. It can-destroy an army’s — or even a whole nation’s — ability to function, but does not hurt human life. The United States has very good electronic warfare capabilities, but has used them only to support conventional military operations. The technology is reaching the point, however, where cyber warfare may be decisive in its own right. 63) Before we imagine what such a "cyberwar" scenario might be like, let’s briefly look at how electronic warfare developed. During the Civil War, operations conducted by the Union army against the Confederate telegraph system foretold modern twentieth-century electronic warfare. Union operatives penetrated Confederate lines to tap into and read military traffic on the Confederate telegraph system. 64) Not only did these operations yield valuable intelligence information, but some operators even began sending bogus messages to sow confusion in the Confederate ranks. Just before World War I, radio communication seemed like a real boon to naval operations because it allowed ship-to-ship and ship-to-shore communications, especially in bad weather. Before this time, flags or light blinkers with limited range provided the only means of communication between ships. Naval ship captains, however, were aware that a sophisticated set of shore-based equipment could locate ships by their radio transmission. By listening to the transmissions, the enemy could ascertain the number and type of ships even if they could not decode actual messages. For this reason, the U. S. Navy was particularly resistant to using radio. However, U.S. military observers aboard British warships soon saw that the tactical advantages of radio outweighed the intelligence losses. Electronic warfare grew rapidly in World War II with the advent of radar. 65) Monitoring radar frequencies allowed spoofing or jamming of enemy radar and led to major units and equipment devoted solely to countermeasures and counter-countermeasures. Gathering intelligence from radio transmissions also increased greatly.

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