物资出库时，必须以（）以账对卡、以卡对物.
A.以物对账
B.以单对卡
C.以单对账
D.以物对物
参考答案：C
He _______ for ten minutes by the time I got there. [ ]
A. has left
B. left
C. has been away
D. had been away
进出口的样品、礼品、非销售展品和其他非贸易性物品，除国家另有规定或者对外贸易合同另有约定的，可以免予检验( )
