【单选题】含2n碳原子的饱和脂肪酸需要经过多少次β-氧化才能完全分解为乙酰COA?( )
【简答题】(14分)(1)现有浓度各为1 mol/L的FeCl3、FeCl2、CuCl2的混合溶液100mL,加入一定量的铁粉,按下列情况填空: ①充分反应后铁粉有剩余,则溶液中一定含有__________阳离子,一定没有__________阳离子。(2分)有关反应的离子方程式是__________________________ ______________________________________...
【单选题】下列哪项不属于肿瘤细胞的异型性?( ) A.细胞大小不一 B.核肿胀,核膜不清 C.核染色质分布不均 D.核大小
A.
下列哪项不属于肿瘤细胞的异型性?( ) A.细胞大小不一
【简答题】物质的变化过程中伴随着能量的变化。化学变化中通常伴随着能量转化,这是因为不同的物质包含的化学能大小不同,在化学变化中物质具有的化学能可以转变为热能、光能或电能等。 (1)举出一个环境中吸收热能的物理变化的例子 。 (2)镁条燃烧时,化学能转化为 能和 能。 (3)已知氢气在氧气中燃烧生成水的变化放出热能。根据能量守恒原理,反应前氢气和氧气的混合物所包含的化学能比反应后化学能 (填“高”或“低”),...
【多选题】Which are pricing strategy?
【单选题】Which of the following BEST describes functional strategy?
A.
a strategy for determining the firm's overall attitude toward growth and the way it will manage its businesses or product lines
B.
a strategy at the business-unit or product-line level that focuses on improving a firm's competitive position
C.
a strategy by which managers in specific areas decide how best to achieve corporate goals through productivity
D.
a strategy that assists first-line managers in making day-to-day decisions about motivating employees
E.
a strategy that integrates an organization's marketing goals into a cohesive whole by focusing on the ideal product mix to achieve maximum profit potential