消防软管卷盘由输入阀门、卷盘、输入管路、支承架、摇臂、软管及喷枪等部件组成。

罩式炉煤气点火前的爆破性试验如何进行操作？

速度υ=1.75m/s的电梯，属于（）梯。

A.低速

B.快速

C.高速

某市环保局应当地居民的举报对排放烟尘超过国家标准的某化工厂作出了罚款4万元的行政处罚，并责令限期治理。化工厂对环保局的行政处罚不服，向法院提起行政诉讼。诉讼期间，原告找到被告要求协商解决，被告同意遂变更了原行政处罚决定，对原告征收2倍的排污费。原告向人民法院申请撤诉。据此回答以下题。

被告改变原具体行政行为，原告申请撤诉，是否须经法院准许

A．无须法院准许，因为撤诉是原告的诉讼权利

B．无须法院准许，因为会减少法院的压力

C．须经法院的同意，因为被告可能违反法律满足原告的不合理要求

D．须经法院的同意，因为被告可能侵害第三人的利益

宗地分割及调整边界时，应预先准备好（）。

A.放样数据

B.勘丈数据

C.原始数据

D.核对数据

Few creatures on earth are as cute as the black lion tamarin, and few have as dramatic a story line. Pug-nosed and diminutive, with a comic fringe of hair, these monkeys dwell in trees in small tracts of forest in southeastern Brazil. Or they did until 1905, when they were declared extinct. No one saw a black lion tamarin again in the wild until 1970. Later, in the 1990s, some Brazilian researchers turned up a small set of isolated, inbred populations scattered over a wide region. Since that time, they have been engineering tamarin migration, doing everything they can to save the world’s most distinctive primates.
Although they are no larger than house cats, tamarins have brains big for their size and a family life organized like our own. They live in groups anchored by an adult male andadult female, along with their offspring. When a mother bears young, she usually produces twins, and although members of the group share in their upbringing, it is most often the father who carries them around in the trees, where the families feed on fruits, insects and bird’s eggs.
Unhappily for the lion tamarins, their tree-bound niche began to disappear after the Portuguese landed in Brazil and began clearing forest to make room for Rio de Janeiro, the settlements and farms. As is the case for so many threatened species, the breakup of their habitat sounded the death knell for tamarins, depriving them of the continuity of forest they require to remain abundant and safe from potential threats in any single vicinity. The animals avoid predators by hardly ever coming down from the trees, so even a narrow logging road through a forest can begin the breakup by preventing them from moving from one patch of forest to another.
A simple solution was to build bridges across roads, allowing the monkeys to move from one forest to another. With some lumber and the researchers’ work, habitats that had been separated became continuous again, improving opportunities for migrating and mating.
The next step was to broaden the distribution of the population. The researchers captured two families of black lion tamarins and moved them to a new forest. After a year, the moves were declared a success: Not only had 80 percent of the tamarins survived, but they had also produced new offspring. So far, so good. The researchers had learned the animals could adjust to the new habitats, even if the insects there tasted a little different or the trees were a slightly different size.
The techniques for saving species in the wild vary. Species with less stringent habitat requirements, like wild turkeys, have been rescued by moving them into new settings as well as outlawing their killing. More challenging to preserve are species that require a lot of land, like elephants, and species that have highly specific requirements for habitat and prey -- like black-footed ferrets. Ultimately, as in all challenges, knowledge is power to save wild species from extinction.

The lumber bridges were devised to ______.

A. improve chances for tamarins to meet and mate
B. connect once separated habitats for the sake of research
C. make use of some lumber cut down
D. both A and C