[单选题]新安装的保护装置投入运行前，安装单位应向运行单位移交复合实际的竣工图纸、调试记录、厂家说明书等。如整理工作有困难而无法全部移交时，可与运行单位协商，但投入运行后（ ）以内必须全部移交完毕。
A.半个月
B.一个月
C.两个月
D.三个月

When the steam engine was invented in the eighteenth century, it began one of the greatest revolutions that have ever happened in our world. The invention of the petrol engine at the end of the nineteenth century led to another enormous change in our lives. And the computer is almost certainly going to be no less important an invention than these engines were.
Just as there was a Stone Age, an Iron Age and so on, we have been living for centuries in a
Paper Age, during which almost all information was kept and sent on paper; and so much of it is wasted after it has been used once that enormous numbers of trees have to be cut down every year to provide us with paper. But now, with the computer, enormous amounts of information can be stored and sent without any paper at all, using small discs or the Internet.
Computers have also made it possible to do very difficult calculations very much faster than any earlier machine could. Computers also allow on
A. The Computer Age
B. The Paper Age and the Computer Age
C. The Computer and Our Daily Life
D. The Computer and Our Future