税务机关需要调回以前会计年度的账簿资料进行检查，应当完整归还的期限是（）个月内。
A.2
B.3
C.4
D.5
参考答案：B
The captain urged that the mission before dark.[ ]
A. must be finished
B. be finished
C. ought to be finished
D. was finished
泵轴是（）的主要零件.
