在50kg/m钢轨上钻螺栓孔上夹板时,第一孔至第二孔中心距为()。
A.220mm
B.140mm
C.150mm
D.110mm
参考答案:C
Our new laboratory is said ____ instrument made in Shanghai. [ ]
A. to equip with
B. to be equipped with
C. to have equipped with
D. to be equipping with
The manager is always very _______ for appointments, which earns him a good reputation.
A.punctual
B.numb
C.allergic
D.content