从模块结构来看，嵌入式系统由（）部分组成。
A.硬件
B.软件
C.开发平台
D.操作系统
参考答案：A, B, C
The decision _____ giving lessons during vacations and weekends should be banned is ____ the Education Department of Anhui Province has made.
A．whether, which
B．why, that
C．that, the one
D．what, what
铸造杆式卡环的卡环末端进入倒凹区的深度为
A．前牙、前磨牙0.2mm，磨牙0.3mm
B．前牙、前磨牙0.3mm，磨牙0.2mm
C．前牙、前磨牙、磨牙均为0.5mm
D．前牙、前磨牙、磨牙均为0.1mm
E．前牙、前磨牙、磨牙均为1.0mm
