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【单选题】
下面关于25Hz相敏轨道电路说法正确的是（ ）。A.
轨道电源电压必须超前局部电源电压90度
B.
局部电源电压必须超前轨道电源电压90度
C.
一段轨道电路区段中只能包含一组道岔
D.
受电端使用的是JWXC-1700型继电器
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【单选题】今年以来，受国内外各种不确定性因素的影响，房地产行业的发展进入了一个新阶段，甲房地产公司从定性和定量的角度，按照很好、较好、一般、较差4种不同的假设条件，预测了本公司年度将面临的各种不确定因素，以及由此给企业带来的各种不同结果。甲房地产公司采用的风险管理技术方法是______。
A.
敏感性分析法
B.
统计推论法
C.
情景分析法
D.
条件预测法
【单选题】Under the Pollution Regulations，when you dump garbage in to the sea you must ______.
A.
notify Coast Guard or MSA
B.
make an entry in the Official Logbook
C.
keep a record for two years
D.
No action is required if you are more than 25 miles fromland and no plastic materials are dumped
【单选题】The developed countries should in reducing greenhouse gas emissions and provide support for the developing nations to follow. prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
take the lead
B.
set up
C.
fire off
D.
ring out
【单选题】O f all the developing countries, China, __________ and India are the largest nations to attract FDI.
A.
Brazilian
B.
Brazil
【判断题】At the same time, globalization has created new advantages for businesses accustomed to dominating their domestic markets. Foreign companies have entered many formerly protected industries in developi...
A.
正确
B.
错误
【单选题】Cars account for half the oil consumed in The U. S. , about half the urban pollution and one fourth the greenhouse (温室) gases. They take a similar oil of ullage (损耗) resources in other industrial nati...
A.
consume half of the oil produced in the world
B.
have serious consequences for the well being of all nations
C.
widen the gap between the developed and developing countries
D.
impose an intolerable economic burden on residents of large cities
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