参照作物需水量

局域网的核心协议是

A．IEEE 801标准

B．IEEE 802标准

C．SNA标准

D．非SNA标准

A machine which makes water out of air could become the greatest household invention since the microwave． Using the same technology as a dehumidifier (除湿器)， the Water Mill is able to create a ready supply of drinking water by getting it from a limitless source－the air． The company behind the machine says not only does it offer all alterative to bottled water in developed countries，but it is a solution for the millions who face a daily water shortage．

The machine works by drawing in damp air through a filter(过滤器) and over a cooling element which changes it into water droplets．It can produce up to 12 liters a day．The Water Mill will also produce more water when storms pass over, as the humidity（湿度）in the air increases．In keeping with its ecodevelopment，the machine uses the same amount of electricity as three light bulbs．

Inventor Jonathan Ritchey said：“The demand for water is off the chart．People are looking for freedom from water distribution systems that are shaky and unreliable”．

The machine，which is about 3 feet wide，is likely to cost￡800 when it goes on sale here in the spring．Its maker, Canadian firm Element Four, estimates that a liter of water will cost around 20 pence to produce．

Environmentalists claim half the world’s population will face water shortage because of climate change by 2080．One in five humans is said to lack access to safe drinking water．

The Water Mill is not effective in areas with below about 30 percent relative humidity, but with average relative humidity in England of more than 70 percent that won’t be much of an issue here.

小题1:According to the author, the biggest advantage of the machine is its ______．

A．little power use

B．unlimited source

C．proper size

D．high production小题2:We can conclude from the passage that the machine________．

A．can be used everywhere

B．has not been on sale

C．will replace the water distribution system

D．will solve the problem of water shortage小题3:The underlined phrase “off the chart” in the passage means ________

A．record-breaking．

B．urgent．

C．unbelievable．

D．amazing．小题4:What would be the best title for this passage?________

A．Microwave for Household Use

B．Filter to Draw in Damp Air

C．Mode Dehumidifier on Sale

D．Machine to Make Water out of Air

某开发商欲参加当地城郊边沿的一块工业废地的招标出让地块的投标报价，该地块规划用途为高档商务办公大楼。若通过招标方式获得了该国有土地使用权后，于2008年10月开始施工，2010年6月该公司寻找合作伙伴，委托评估机构对已完工部分进行评估，核定现状价值为合作提供依据。

若采用市场比较法评估已完工部分，请回答：
(1)在选取可比案例时应考虑哪些因素
(2)确认比准价格有哪几种方法

根据《中华人民共和国商标法》的规定，注册商标每次续展的有效期限为( )年。

A．5

B．10

C．15

D．20

平波电抗器油位因温度上升，高出油位计上限时怎样处理？