《线路综合维修验收评分标准》规定，轨枕的枕上或枕下离缝大于（）者为吊板。
A.1mm
B.2mm
C.3mm
D.4mm
参考答案：B
We'll be away for two weeks because we'll have a ___________.
A．two-weeks holiday
B．two weeks' holidays
C．two- week holiday
D．two-weeks' holiday
硬件是计算机系统中物理装置的总称。 ( )
