会计档案中可以作为永久保存的会计文件是( )
A．总帐
B．会计移交清册
C．会计档案保管清册
D．年度会计决算报表
参考答案：D
_______ the classroom, the teacher found all the parents already______ there. [ ]
A. Entered; seated
B. Entering; seating
C. Entered; seating
D. Entering; seated
导爆索与导爆索联结，搭结方向应符合从动与主动导炮索之间夹角必须（）
A.90°
B.小于90°
C.大于90°
