防止电力电缆损坏事故，合理安排电缆段长，尽量减少电缆接头的数量，严禁在变电站电缆夹层、桥架和竖井等（）区域布置电力电缆接头。
参考答案：缆线密集
She _____ Mr. Green since ten years ago. [ ]
A. has been married to
B. got married to
C. has been married with
D. has got married to
Each part of the fire-main system located on an exposed deck must be（）.
A.protected against freezing
B.locked to prevent theft
C.numbered sequentially
D.pressurized at all times
