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: 下列交通安全的设施中哪种设施不起诱导视线的作用( )。
A. 突起路标
B. 防撞筒
C. 轮廓标
D. 指示标志
当按承载力极限状态设计时,在非地震区高耸结构构件的荷载效应基本组合中所用的下列系数取值,其中( )项是错误的。
A. 永久荷载分项系数γG,一般情况可采用1.2
B. 安装检修荷载分项系数γA可采用1.4
C. 温度作用荷载分项系数γT可采用1.0
D. 塔楼楼面或平台的活荷载组合值系数ΨCL可采用0.7
Text 2Every spring migrating salmon return to British Columbia’s rivers to spawn. And every spring new reports detail fresh disasters that befall them. This year is no different. The fisheries committee of Canada’ s House of Commons and a former chief justice of British Columbia, Bryan Williams, have just examined separately why 1. 3 m sockeye salmon mysteriously "disappeared" from the famed Fraser river fishery in 2004. Their conclusions point to a politically explosive conflict between the survival of salmon and the rights of First Nations, as Canadians call Indians. In 2004, only about 524,000 salmon are thought to have returned to the spawning grounds, barely more than a quarter the number who made it four years earlier. High water temperatures may have killed many. The House of Commons also lambasted the federal Department of Fisheries and Oceans (DFO) for poor scientific data, and for failing to enforce catch levels. Four similar reports since 1992 have called for the department’s reform. In vain. its senior officials are "in denial" about its failings, said the committee. Mr Williams’ report added a more shocking twist. He concluded that illegal fishing on the Fraser river is "rampant and out of control", with "no-go" zones where fisheries of ricers are told not to confront Indian poachers for fear of violence. The judge complained that the DFO withheld a report by one of its investigators which detailed extensive poaching and sale of salmon by members of the Cheam First Nation, some of whom were armed. Some First Nations claim an unrestricted right to fish and sell their catch. Canada’s constitution acknowledges the aboriginal right to fish for food and for social and ceremonial needs, but not a general commercial right. On the Fraser, however, the DFO has granted Indians a special commercial fishery. To some Indians, even that is not enough. Both reports called for more funds for the DFO, to improve data collection and enforcement. They also recommended returning to a single legal regime for commercial fishing applying to all Canadians. On April 14th, Geoff Regan, the federal fisheries minister, responded to two previous reports from a year ago. One, from a First Nations group, suggested giving natives a rising share of the catch. The other proposed a new quota system for fishing licenses, and the conclusion of long-standing talks on treaties, including fishing rights, with First Nations. Mr Regan said his department would spend this year consulting "stakeholders" (natives, commercial and sport fishermen). It will also launch pilot projects aimed at improving conservation, enforcement and First Nations’ access to fisheries. The best title for the passage may be ______.
A. Where have the salmon gone
B. How to protect the salmon
C. Environment and fishery
D. The survival of salmon and the rights of First Nations
New York is one of the (11) large American cities to have some of its policemen on horseback. The New York Police have 170 horses that they use in certain parts of the city. The horses are expensive to (12) , but it needs even more special horseshoes. In fact, they need more than (13) of them each year. Every police horse in New York gets new shoes every month. (14) these shoes in good repair is the job of six black-smiths. There are only about thirty-five of these blacksmiths in the (15) United States.