单线半自动区段,旅客列车在中间站越行货物列车时,货物列车在该站最少停留时间为()。
A.τ连+t运
B.2×τ连+2×t运
C.τ连+2×t运
D.2×τ连
参考答案:B
This reflects the priority being attached to economic over political activity, partly caused by a growing reluctance to enter a calling blighted by relentless publicity that all too often ends in destroying careers and reputations.
A.divine summons
B.political career
C.profession
D.business transaction
进行沥青软化点试验时(当其不超过80℃时),试验起始温度为5℃±0.5℃。()