“1211”灭火机有绝缘性能好,灭火时不污损物品、不留痕迹,并有灭火效率高,速度快等优点。
参考答案:对
用塑料等处理的化纤制男防风衣
A real estate developer has bought 1,872 acres of land on which to build a new neighborhood. He plans to zone the area for roads, common area, and housing plots on a ratio of 2:3:8, respectively. If a planned lake will take up 16 acres of the common area, how many acres of the common area will be left over for the clubhouse and golf course ?()
A. 128
B. 144
C. 416
D. 432
E. 450