要严格按照运行图预留的慢行附加时分控制线路施工慢行处所,原则上单线一个区段慢行不超过两处,双线一个区段内每个方向慢行不超过两处;同一区间内慢行处所不超过()处。
参考答案:一
Words ______ me when I wanted to express my thanks to him for having saved my son from the
burning house. [ ]
A. failed
B. left
C. discouraged
D. disappointed
CMOS门电路不包括()。
A.测试门
B.三态门
C.与非门
D.传输门