一切电话中断后,连续发出同一方向的列车,两列车的间隔时间应按区间规定的运行时间另加13分钟。
参考答案:错
At the meeting the boss was explaining his plan while his secretary_________ the notes.
A.is taking
B.was taking
C.has taken
D.takes
地基土荷载板试验可得到的土参数是( )。
A.承载力特征值
B.地基沉降量
C.变形模量
D.压缩模量