The police went there       the missing boy last week. At last they found him and brought him home safe.

A．in charge of

B．in search of

C．in honor of

D．instead of

丝用来克服因（）间的间隙而产生的仪表误差。改变调节螺钉的位置即可改变机械传动的（），可调整压力表的（）。