下列各项属于企业管理费用的有（）。
A.销售人员工资
B.董事会费
C.银行借款利息费用
D.汇兑损失
参考答案：B
Hardly _____ to speak _____ someone interrupted him. [ ]
A. had he begun; when
B. he had begun; while
C. did he begin; when
D. he begun; when
简述设备管理坚持的五个相结合的原则？
