利用量缸表可以测量气缸的圆度、圆柱度，以了解其磨损状况，大指针转动一格为()毫米。
A.0.05
B.0.02
C.0.01
D.0.005
参考答案：C
To their great relief, the missing child returned home,________, after an absence of two weeks. [ ]
A. felt tired and sound
B. tiring and soundly
C. feeling tired but soundly
D. tired but sound
NY7型机车的自重是（）t。
A.122
B.124
C.128
D.137
