下面（）不是DOS下设备保留名。
A.CON
B.EXE
C.PRN
D.LPT2
参考答案：B
When ___help, one often receives"Thank you!" or "It's kind of you!"from others.[ ]
A. offering
B. to offer
C. to be offered
D. offered
LCP盘上包括哪些元件？
