医用氧气瓶中的氧气释放部分后，氧气瓶中的氧气（气态）用去一部分，剩余氧气的质量 密度 。（选填：变大、变小、不变）
变小；变小。
Chi, Di and Fi formed an ordinary partnership to run an art gallery. Each of them paid ￡100,000 into the business. As Fi had no prospect of raising any more money it was agreed between them that her maximum liability for any partnership debts would be fi xed at her original contribution of ￡100,000. The partnership agreement specifi cally restricted the scope of the partnership business to the sale of ‘paintings, sculptures and other works of art.’ In January 2010 Chi took ￡10,000 from the partnership’s bank drawn on its overdraft facility. She had told the bank that the money was to fi nance a short-term partnership debt but in fact she used the money to pay for a holiday. In February Di entered into a ￡25,000 contract on behalf of the partnership to buy some books, which she hoped to sell in the gallery.Required:Advise Chi, Di and Fi as to their various rights and liabilities in relation to the operation of the business under partnership law. (10 marks)
关于椎动脉的叙述，哪个正确()
A．穿第6～1颈椎横突孔
B．起自腋动脉第1段
C．经椎间孔入颅
D．主要营养脊髓、小脑、间脑、脑干和大脑后1/3
E．主要营养脑干、小脑和大脑前2/3
