设置机械排烟系统的内走道，以下划分防烟分区措施正确的是( )。A．利用与房间的隔墙

Most computer systems are (165) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (166) to an outsider attack by preventing (167) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (168) users. Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment, but also helps to prevent future attacks. These attacks are usually (169) by tools referred to as Intrusion Detection Systems.

（168）处是（）

A.power

B.rights

C.authorized

D.common

The farmers built long fences, ____ keeping the wild dogs out of them.

A．aimed at

B．aim for

C．aiming at

D．aimed to

以下关于调整图层的描述错误的是（）_。

A、调整图层可以在图层调板中更改透明度 

B、调整图层可以在图层调板中添加图层蒙版 

C、可通过创建“曲线”调整图层或者通过“图像>调整>曲线”菜单命令对图像进行色彩调整，两种方法都对图像本身没有影响，而且方便修改 

D、调整图层可以在图层调板中更改图层混合模式

组合导线的固定线夹安装应牢固，并与导线（）

()

A.A

B.B

C.C

D.D