“煤”变“油”这一技术目前世界上只有少数几个国家掌握。煤炭变成的汽油和柴油不合硫、氮等污染物,是高质量的洁净油品。;据悉,我国也已启动“煤”变“油”项目。
硫、氮污染物进入大气后,产生的环境问题主要是()。
A. 放射性污染
B. 臭氧层空洞
C. 酸雨、酸雾
D. 重金属污染
Other drivers thought they were______.
A. carrying a cupboard to the church
B. sending flowers to the church
C. carrying nothing but a piece of furniture
D. going to attend a funeral(葬礼)at the church
为解决我国当前面临的能源问题()。
A. 应该限制生产规模以适应能源短缺的限制
B. 主要加快石油勘探和开采的同时限制进口
C. 应该压缩不稳定性能源的开发利用比例
D. 应加强技术改造,提高能源利用率
The expression "wait on table" in the second paragraph means"______".
A. work in a furniture shop
B. keep accounts for a bar
C. wait to lay the table
D. serve customers in a restaurant