收、付款的记账凭证可以不由出纳人员签名或盖章。 ( )
参考答案:错
皮肤受照后出现坏死溃疡属于皮肤损伤的级别为()
A.0度
B.Ⅰ度
C.Ⅱ度
D.Ⅲ度
E.Ⅳ度
While Mr Smith was on vacation last month, he asked his secretary to _____ the business of his company. [ ]
A. have an eye for
B. have eyes for
C. keep an eye on
D. keep eyes on