A．Because most of us have to do our jobs.

B．Because most of us have chosen the wrong jobs.

C．Because most of us have to earn living from our jobs.

D．Because most of us spend a great part of our lives doing our jobs.

拉伸浴槽温度异常，应检查的项目有（）。

A、集束总线密度

B、蒸汽压力是否在设定值

C、拉伸倍数

D、疏水器工作状态