下列属于自制原始凭证的有( )。
A.购货的发票
B.销货的发票
C.入库单
D.工资结算单
参考答案:B,C,D
解析: 购货的发票由销货单位开出,故属于外来原始凭证。
_____ from heart trouble for years, Professor White has to take some medicine with him wherever he goes.
A.Suffered
B.Suffering
C.Being suffered
D.Having suffered
YWY-2型液位显示仪在发电车上用于()液位的显示及控制。
A.膨胀水箱
B.上油箱
C.下油箱
D.机油箱