测工作面矿压显现的指标有顶底板移近量、支架载荷量和支柱（）下缩量，一般称为（）。
参考答案：活柱；三量
I shall never forget those years ______ I worked in the factory with the workers,
______ has a great effect on my life.
A．when, that
B．which, which
C．in which, when
D．in which, which
涡轮发动机中，哪一个温度是最关键的温度？燃气温度一般在什么部位测量？
