近电作业,施工项目部应进行现场勘察,编写()方案,并将安全施工方案提交运维单位备案。
参考答案:安全施工
ZP.W1-18型移频自动闭塞设备,频标就是在原来移频信号中加入()特征频率信息。
A.1个
B.2个
C.3个
D.4个
What is the predicament that faces East Timor a. How to boost economy while building infrastructure. b. How to develop tourism with a lack of infrastructure. c. How to develop tourism without destroying its natural beauty. d. How to develop tourism while boost economy.