士官晋衔在何时办理（），士官定期增资在何时办理（）。
参考答案：每年的12月份；每年的1月份
Country life provides him with peace and quietness, ______ what he can't enjoy living in cities. [ ]
A. that is
B. which is
C. what
D. is for which
通常情况下，耐火浇注料搅拌均匀后应在（）内完成浇筑。
A.30min
B.45min
C.60min
D.90min
