预备费用由价差预备费和（）组成。
A.基本预备费
B.基本装备费
C.基本间接费
D.基本管理费
参考答案：A
—Where did you pick up the stamp?
—It was at the post office ________ we worked in the summer vacation.
A．that
B．where
C．which
D．when
重婚罪
