【单选题】The Daylight Saving Time Energy Act of 1973 was responsible for
A.
preserving and setting Daylight Saving Time across the continent
B.
instituting five time zones in the United States
C.
extending Daylight Saving Time in the interest of energy conservation
D.
conserving energy by giving the Department of Transportation authority over time laws
【单选题】假定某商品的价格从3元降到2元,需求量将从9单位增加到11单位,则该商品卖者的收益将
【单选题】假定某商品的价格从3元降到2元,需求量将从9单位增加到11单位,则该商品卖者的收益将
【单选题】假定某商品的价格从3元降低2元,需求量从8个单位增加到11个单位,则该商品卖者的总收益将( )。
【单选题】Saving energy means saving money.Homeowners and renters know this basic fact,but they often don’t know what kinds of adjustments they can make in their homes and apartments that will result in savings...
A.
You can reduce your $130 monthly lighting costs to $65 by using fluorescent bulbs instead of incandescent.
B.
Double-paned windows can cut energy costs.
C.
Your local energy company will send an energy auditor at your request.
D.
Some appliances have energy-saving settings.
【单选题】where is Mount Tai?it is in --
【单选题】冗余拓扑中,两台交换机SW1(4096,1111-2222-3333)和SW2(32768,1000-2000-3000),谁最有可能成为跟交换机
【单选题】(2009江苏四市联考) By nine o'clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ___________ appeared a rare rainbow soon.