Rosa and Alexei are partners in a successful unlimited partnership. Rosa is highly ambitious and wishes to pursue rapid growth, but Alexei does not want to take unnecessary risks and is satisfied with the business as it is currently structured.Rosa has been taking decisions that exceed her authority under the partnership agreement. She recently ordered expensive new IT equipment. Alexei is angry as he considers the equipment to be far too sophisticated for the needs of the business in the foreseeable future. Rosa argues that the business needs to invest heavily to build on its success.The partners meet to resolve their differences. Alexei demands that the IT equipment, which is now installed and ready for use with new software, be returned to the supplier. The supplier of the equipment has submitted its invoice and this is due for payment immediately. Rosa refuses to agree to return the equipment.Required:

(b) Explain what Alexei must do if he wishes to withdraw from the partnership, and whether his withdrawal will relieve him of all responsibilities incurred by the partnership to date. (4 marks)

计算机病毒是指（）。

A.被破坏的程序

B.已损坏的磁盘

C.带细菌的磁盘

D.具有破坏性的特制程序