点划线一般用作对称线或圆的中心线及（）
A.剖面线
B.中断线
C.轴心线
D.不可见轮廓线
参考答案：C
With reference to the Companies Act 1965 and relevant illustrations, explain what is fraudulent trading and the legal consequences of such fraudulent trading. In your answer state also who can be made liable as well as who can initiate legal proceedings for fraudulent trading. (10 marks)
某客户企业对某种材料的年需用量为3万件，每次订购费用为300元，年保管费率为20％，材料单价为10元。现求得其经济订购批量为3000件，则其订购保管总费用为（）
A.2元
B.3000元
C.6000元
D.30000元
