—That must have been a long trip.

—Yeah, it        us a whole week to get there.

A．takes

B．has taken

C．took

D．was taking

与电容器组串联的电抗器，如采用油浸铁心式，宣布置在屋外，当污秽较重的工矿厂区采用普通电抗器时，应布置在屋内。屋内安装的油浸式铁心串联电抗器，其油量超过（）应单独设置在小室内。

A.150kg

B.100kg

C.75kg

D.50kg