矢量图是由称为矢量的数学对象定义的（）组成。 A.像素 B.线条 C.色彩 D.曲线

硫酸装置干吸塔所用的槽管式分酸器依靠堰槽上众多个孔洞来分酸。

大蒜根尖细胞中没有（  ）

A．线粒体

B．染色体

C．叶绿体

D．细胞质

(b) The directors of Tunshill are disappointed by the draft profi t for the year ended 30 September 2010. The company’s assistant accountant has suggested two areas where she believes the reported profi t may be improved:(i) A major item of plant that cost $20 million to purchase and install on 1 October 2007 is being depreciated on a straight-line basis over a fi ve-year period (assuming no residual value). The plant is wearing well and at the beginning of the current year (1 October 2009) the production manager believed that the plant was likely to last eight years in total (i.e. from the date of its purchase). The assistant accountant has calculated that, based on an eight-year life (and no residual value) the accumulated depreciation of the plant at 30 September 2010 would be $7·5 million ($20 million/8 years x 3). In the fi nancial statements for the year ended 30 September 2009, the accumulated depreciation was $8 million ($20 million/5 years x 2). Therefore, by adopting an eight-year life, Tunshill can avoid a depreciation charge in the current year and instead credit $0·5 million ($8 million – $7·5 million) to the income statement in the current year to improve the reported profit.(5 marks)(ii) Most of Tunshill’s competitors value their inventory using the average cost (AVCO) basis, whereas Tunshill uses the fi rst in fi rst out (FIFO) basis. The value of Tunshill’s inventory at 30 September 2010 (on the FIFO basis) is $20 million, however on the AVCO basis it would be valued at $18 million. By adopting the same method (AVCO) as its competitors, the assistant accountant says the company would improve its profi t for the year ended 30 September 2010 by $2 million. Tunshill’s inventory at 30 September 2009 was reported as $15 million, however on the AVCO basis it would have been reported as $13·4 million. (5 marks)Required:Comment on the acceptability of the assistant accountant’s suggestions and quantify how they would affect the fi nancial statements if they were implemented under IFRS. Ignore taxation.Note: the mark allocation is shown against each of the two items above.

某一家系具有一常染色体显性遗传病，该疾病通常在40岁以后发病。从每一个家庭成员提取DNA样品，用限制性内切核酸酶TaqI消化并进行电泳分离。用已克隆到质粒中的人的DNA片段为探针，放射性标记后进行Southern杂交。结果如下：

你如何解释最后一个男孩的结果

（）和（）是研究刑法学的根本方法。