[多选题]智零盾客户端支持哪些身份认证方式
A.用户名、密码
B.短信验证码
C.手机扫码+数字证书
D.Ukey+数字证书

[单项选择] Taking a stand Xuemei Han was a second-year graduate student in the Department of Ecology and Evolutionary Biology at Yale University. Last month, she was facing expulsion (开除). Efforts to transfer to the university’’s forestry school had failed, and it looked as though the 26-year-old might have to return to China within a matter of weeks. In June, Han had been told that she was "not in good academic standing" with her department — an accusation she disputed. She had passed her qualifying exams at the first attempt and, after a few more tries, her required language exam as well. So she did something that many Chinese graduate students would never dream of doing: on 20 October she filed a complaint against Yale, accusing the university of treating Chinese students unfairly. The only Chinese student in her department, Han wrote in her complaint that she suspected professors were reluctant to work with her because they thought she would nee
A. Y
B. N
C. NG

[单选题]（）是常用的算术运算电路。
A.全加器
B.编码器
C.译码器
D.数值比较器

[简答题]汽油50%和90%表示什么意思？这两点过高对汽油使用有何影响？

[判断题]值班监控(调控)员对远方操作结果有疑问或相关间隔出现异常信号时,应查明情况,必要时需通知变电运维人员到现场核对设备状态。
A.正确
B.错误

[判断题](判断题)2022年事故警示教育题库,《生产安全·事故应急预案管理办法》规定,煤矿企业
应当制定本单位的应急预案演练计划,根据本单位的事故风险特点,每年至少组织一次现场处置
方案演练。( )省局煤矿瓦斯抽采作业试题
A.正确
B.错误

[判断题]案例设计型毕业论文中的案例是对管理情境的描述，可以根据需要，对所描述的情景做适当修改，不必严格遵循实际。

[判断题]计算机发展历史可分为1854年－1890年、1890年－20世纪早期、20世纪中期、20世纪晚期－现在，四个阶段。

[单选题]缺铁性贫血红细胞生成缺铁期的主要改变，正确的是
A.血清铁正常
B.红细胞值降低
C.红细胞游离原卟啉值升高
D.血红蛋白量下降
E.血清铁蛋白正常

[单项选择]在各种结构的天车中，（）桥架制造工艺较简单。
A. 桁架式
B. 腹板梁
C. 箱形
D. 集中式

[判断题]1号线列车编组方式采用4动2拖六辆车编组( )
A.正确
B.错误

[判断题]晶体三极管的发射极和集电极可以调换使用
A.正确
B.错误

[单项选择]根据弗里德曼的理论，国民经济的空间一体化在下列哪一发展阶段可以实现( )
A. 起飞准备阶段
B. 起飞阶段
C. 成熟阶段
D. 追求生活质量阶段

[单选题]承力索吊弦线夹螺栓的紧固力矩为（ ）。
A.23N.m
B.24N.m
C.25N.m
D.26N.m

[单选题]为了保证用户正常电压，调度机构应选择地区负荷集中的发电厂和变电站的（ ）作为电压监视点。
A. 设备
B. 变压器
C. 线路
D. 母线

[不定项选择题]共用题干 Ants Have Big Impact on Environment as“Ecosystem Engineers”
Research by the University of Exeter has revealed that ants have a big impact on their local environment as a result of their activity as“ecosystem engineers”and predators. The study,published in the Journal of Animal Ecology,found that ants have two distinct effects on their local environment.
Firstly,through moving of soil by nest building activity and by collecting food they af-fect the level of nutrients in the soil. This can indirectly impact the local populations of many animal groups,from decomposers to species much higher up the food chain.
Secondly,they prey on a wide range of other animals,including larger prey which can be attacked by vast numbers of ant workers.
Dirk Sanders,an author of the study from the university's Centre for Ecology and Con-servation,said:“Ants are very effective predators which thrive in huge numbers. They're al-so very territorial and very aggressive,defending their resources and territory against other predators. All of this means they have a strong influence on their surrounding area.”
“In this research,we studied for the first time how big this impact is and the subtleties of it. What we found is that despite being predators,their presence can also lead to an increase in density and diversity of other animal groups. They genuinely play a key role in the local environment,having a big influence on the grassland food web,”Sanders said.
The study,carried out in Germany,studied the impact of the presence of different combinations and densities of black garden ants and common red ants,both species which can be found across Europe,including in the UK.It found that a low density of ants in an area increased the diversity and density of other animals in the local area,particularly the density of herbivores and decomposers. At higher densities ants had no or the opposite effect,showing that predation is counteracting the positive influence.
Dr Frank van Veen,another author on the study,said:“What we find is that the impact of ants on soil nutrient levels has a positive effect on animal groups at low levels,but as the number of ants increases,their predatory impacts have the bigger effect一thereby counteracting the positive influence via ecosystem engineering.”
Ants are important components of ecosystems not only because they constitute a great part of the animal biomass but also because they act as ecosystem engineers. Ant biodiversity is incredibly high and these organisms are highly responsive to human impact,which obviously reduces its richness. However,it is not clear how such disturbance damages the maintenance of ant services to the ecosystem. Ants are important in below ground processes through the alteration of the physical and chemical environment and through their effects on plants,microorganisms,and other soil organisms. As predators,ants______.
A.prey on small as well as large animals
B.collect nutritious food from the soil
C.collect food as decomposers
D.prey on species much higher up the food chain

[单项选择]
Directions:
Read the following text. Choose the best word or phrase for each numbered blank and mark A, B, C or D on your ANSWER SHEET.