【单选题】Most publishing is now 'electronic' in the sense that books, magazines, and newspapers are prepared on computers, and exist as computer files before they are printed on paper. Often there are advantag...
A.
Readers will have more accesses.
B.
Books and newspapers will be kept as computer files.
C.
It will not make any sense to keep the printed versions.
D.
Electronic publications will replace printed ones.
【简答题】The survey on the publishing market concludes that two thirds of print books will give way to digital ones in three years.
【单选题】数控机床进给系统的机械传动结构中,具有滚动摩擦的导轨( )。
【判断题】针入度指数(PI)值越大,表示沥青的感温性越差。