蓝图档案的存放保管方法是()。
A、折叠组卷
B、禁止折叠
C、随意存放
D、以上都不正确
参考答案:A
行车电气线路由()三部分组成;行车桥架主梁的结构主要有()等几种。
Production at the factory was________for two hours because there was no electricity. [ ]
A. interrupted
B. disturbed
C. missed
D. lost