某专业队在一个施工段上的施工作业时间为( )。
A．工期
B．流水步距
C．流水节拍
D．流水施工
参考答案：C
It is ten years _____ I lived in Nanjing, so I know ____ about what it is like today. [ ]
A. since; nothing
B. that; everything
C. before; something
D. since; anything
模拟量及脉冲量弱电信号输人回路电缆可选用外部总屏蔽电缆，芯线截面不小于0.75mm2。
