当前，温室花卉生产发展趋势主要有（）A.大型化、现代化 B.季节化、规模化 C.工厂

下图是农村沼气池结构示意图。

（1）填名称。

①_______②_________ ③_________④_______⑥________⑦__________

（2）发酵后，③中的沉渣物质可作为_____________。

（3）你如何检验这个沼气池中有无沼气生成?   

宋某是某房地产经纪事务所总经理，在某房地产开发公司开发的A花园公寓项目中拥有小额股份。该花园公寓地处城市近郊，依山傍水，周围绿树成荫，到市区交通也非常方便。李某是宋某的朋友，委托宋某购买一套环境好、价格适中、建筑面积140m左右的住房。于是宋某向李某推荐了A花园。李某经考虑后，委托宋某所在经纪事务所代其选购一套A花园公寓。但在李某迁入A花园仅1个月，突遇一场百年不遇的暴雨后不久，便发现客厅墙体出现数处小裂缝，于是自己请人修缮。但3个月后，裂缝扩大，并渗水，致使一幅价值不菲的名画污损。李某通过调查发现自己的购房价格比一般市场价格高15%左右。

关于墙体裂缝，下列说法中正确的有（）。

A.宋某不应故意隐瞒危险因素

B.宋某无法预知"百年不遇暴雨"这一可能危险因素

C.李某应预先请熟人检查导致裂缝原因

D.李某应在墙体出现小裂缝时向经纪人提出

蛋鸡场的选址要考虑（），（），（）和农业发展要求

What might driving on an automated highway be like The answer depends on what kind of system is ultimately adopted. Two distinct types are on the drawing board. The first is a special-purpose lane system, in which certain lanes are reserved for automated vehicles. The second is a mixed traffic system: fully automated vehicles would share the road with partially automated or manual driven cars. A special-purpose 1ane system would require more extensive physical modifications to existing highways, but it promises the greatest gains in freeway (高速公路) capacity.

Under either scheme, the driver would specify the desired destination, furnishing this information to a computer in the car at the beginning of the trip or perhaps just before reaching the automated highway. If a mixed traffic system way was in place, automated driving could begin whenever the driver was on suitably equipped roads. If special-purpose lanes were available, the car could enter them and join existing traffic in two different ways. One method would use a special onramp (入口引道). As the driver approached the point of entry for the highway, devices installed on the roadside would electronically check the vehicle to determine its destination and to ascertain that it had the proper automation equipment in good working order. Assuming it passed such tests, the driver would then be guided through a gate and toward an automated lane. In this case, the transition from manual to automated control would take place on the entrance ramp. An alternative technique could employ conventional lanes, which would be shared by automated and regular vehicles. The driver would steer onto the highway and move in normal fashion to a "transition" lane. The vehicle would then shift under computer control onto a lane reserved for automated traffic. [The limitation of these lanes to automated traffic would, presumably, be well respected, because all trespassers (非法进入者) could be swiftly identified by authorities. ]

Either approach to joining a lane of automated traffic would harmonize the movement of newly entering vehicles with those already traveling. Automatic control here should allow for smooth merging without the usual uncertainties and potential for accidents. And once a vehicle had settled into automated travel, the driver would be free to release the wheel, open the morning paper or just relax.

We learn from the first paragraph that two systems of automated highways ().

A. are being planned

B. are being modified

C. are now in wide use

D. are under construction

一般出口卖方信贷占用出口商授信额度。