（）型操作系统适合于工作负荷固定、处理机之间功能差异较大的异构型多处理机。
参考答案：主从
Now when people refer to England, you find Wales _____ as well.[ ]
A. to include
B. including
C. which includes
D. included
下列描述的是物质的化学性质的是
①浓盐酸具有挥发性，在空气中会生成白雾．
②浓硫酸具有吸水性可作干燥剂．
③浓硫酸具有脱水性可使白纸变黑．
④硝酸具有氧化性． [ ]
A．①②
B．②③
C．②④
D．③④
