利用“控制面板”中的工具程序可以进行更改计算机的外观、安装新的软件和硬件、改变日期等操作。
参考答案：对
What is the nurse’s most important role in caring for a client with a mental health disorder
A. To offer advice.B. To know how to solve the client’s problems.C. To establish trust and rapport.D. To set limits with the client.
先化简，再求值（3x2y﹣2xy2）﹣（xy2﹣2x2y），其中x=﹣1，y=2．
