{{B}}
Save Energy At Home{{/B}} On the average, Americans waste as much energy as two-thirds of the world’s population consumes. That’s largely the {{U}} (51) {{/U}} of driving inefficient cars, using inefficient appliances (设备), and living and working in poorly insulated (隔热) buildings. Then what can you do to {{U}} (52) {{/U}} the situation Buy energy-efficient products -- Buy new appliances or electronics of the highest energy-efficiency rating. New energy-efficient models may cost more initially, but have a lower operating {{U}} (53) {{/U}} over their lifetimes. The most energy-efficient models {{U}} (54) {{/U}} the Energy Star label, which identifies products {{U}} (55) {{/U}} use 20-40 percent less energy than standard new produc A. Moreover B. However C. Therefore D. So [多项选择]文件的常规属性是指文件的( )等。
A. 大小 B. 位置 C. 类型 D. 以上全部 [判断题]正线曲线与道岔间夹直线长度一般条件下不应小于0.6 vmax,困难条件下不应小于0.5 vmax。摘自《高速铁路有砟轨道线路维修规则》第3.1.7条
A.正确 B.错误 [多项选择]下列组织,不具备独立的法人资格的有()。
A. 总公司 B. 分公司 C. 母公司 D. 子公司 E. 董事会 [单项选择]下面哪一项不是包扎的目的()
A. 保护创面 B. 减少出血 C. 保护隐私 D. 减轻疼痛 E. 避免污染 [单选题]除新桥首个工况:桥梁荷载试验荷载在桥上的稳定时间不少于()。
A. 2min B. 5min C. 10min D. 15min [简答题]岩溶形成的条件有哪些?
我来回答: 提交
|