Which of the following printers would be the BEST choice for printing on multi-part forms?（）
A、Impact printer
B、Thermal printer
C、Inkjet printer
D、Laser printer
Which of the following is the standard aspect ratio for HDTV？（）
A、2.35：1
B、4：3
C、1.33：1
D、1.78：1
CPU组成中不包括（）。
A、地址译码器
B、指令译码器
C、地址寄存器
D、指令寄存器
Which of the following is the correct signal flow for an analog multi-room audio system？（）
A、Source，Volume Control，Speaker，Amp
B、Source，Amp，Volume Control，Speaker
C、Amp，Source，Volume Control，Speaker
D、Speaker，Amp，Volume Control，Source
CPU中，除了内部总线和必要的寄存器外，主要的两大部件分别是运算器和（ ）。
A、控制器
B、存储器
C、Cache
D、编辑器
Which of the following describes how to set the Read-only attribute on a folder？（）
ARight-click the folder > Properties > Security tab > select the username from the list > Permissions > clear the box labeled Read > OK
BOpen the folder > Tool > Folder Options > General tab > Read-only > OK
COpen the Command Prompt > type attrib r [drive：][path] > Enter
DOpen the Command Prompt > type attrib +r [drive：][path] > Enter
ERight-click the folder > Properties > General tab > Attributes > select Read-only > OK