某厂新建#1机组高压加热器2007年全年发生非计划停运3次,修复时间累计120小时。该高压加热器故障平均修复时间是()小时。
A、30
B、40
C、120
D、360
参考答案:B
积劳成疾
The young man helped the company recover , so his boss gave him an apartment ____.
A.in return
B.in turn
C.in charge
D.in fact