【单选题】根据下列文章,请回答 31~35 题。 Superconducting Ceramic (陶瓷) An underground revolution begins this winter. With the flip (轻击) of a switch,30,000 homes in one part of Detroit will soon become the first in the coun...
A.
With a flip of switch, electricity can be transmitted.
B.
Other American cities can benefit from the high-performance cables.
C.
Great amounts of power can be conserved.
D.
Detroit will first receive electricity transmitted by the new electrical cables.
【简答题】It is said that ______ (在公路上伤亡人数已超过) the casualties since the American Revolutionary War.
【多选题】通过下列哪几种结合起来研究,可以了解一国的贸易规模、技术水平、生产能力和它在国际贸易中的实力地位。( )
【判断题】安检员上岗前需要检查安检器材、设备及相关用品的齐备、完好情况,并做好各安检设备的调试
【多选题】除了客房不同空间的设计和相关物品配置外,客房内还配有( )等设施设备。 ( )
【单选题】一般来讲,哪个阶层的消费群体在购买旅游产品和服务时,追求高品味,维持高标准,注重成熟感和成就感?( )
【单选题】Developing a low-carbon economy is__________global topic and the world needs __________clean revolution with participation from everyone, decision makers to the children.
【判断题】经常项目的主要特性就在于是单方面收支而不会产生双向流动。