标书费和保证金在生成招标文件时填写。()
参考答案:对
If you don't go to school by bus tomorrow, ________. [ ]
A. so do I
B. so will I
C. nor do I
D. nor will I
XZK-400-0.5/10型线路阻波器型号中,400表示()
A.线路特性阻抗为400Ω
B.额定电流为400A
C.阻塞频带宽度为400kHz
D.最高阻塞频率为400kHz