∫(0,+∞)[(x^2)e^(-2x)]dx

已知有向图G，V（G）={0，1，2，3，4}，E（G）={[0,1], [1,2], [2,0], [2,4], [3,0], [3,2], [3,4],[4,0]}，则顶点0的入度为_________。

已知函数f（x）是定义在[-e，0）∪（0，e]上的奇函数，当x∈[-e，0）时，f（x）=ax+ln（-x），则当x∈（0，e]时，f（x）=______．

float f[][][] = new float[3][][]；  float f0 = 1.0f；  float[][] farray = new float[1][1]；  What is valid？（） A:  f[0] = f0； B:  f[0] = farray； C:  f[0] = farray[0]； D:  f[0] = farray[0][0]；

What is the Cost of Goods Sold using the Weighted Average Method 未知类型：{'options': ['[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]A. $3604.02. [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]B. $2918.00. [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]C. $4142.00.[/tr][/]'], 'type': 102}

年报应于年度终了后( )报出。 未知类型：{'options': ['[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]A．1个月 [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]B．2个月 [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]C．3个月 D_4个月[/tr][/]'], 'type': 102}

如图所示的电路，则电阻R等于（ ）[img=169x98]18039a0a6672e91.png[/img] A: 15Ω B: 12Ω C: 9Ω D: 6Ω

Which of the following is least likely to be considered an off balance sheet debt 未知类型：{'options': ['[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]A. Take-or-pay contract. [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]B. Capital lease. [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]C. Sale of receivables.[/tr][/]'], 'type': 102}

Professional organizations of accountants and auditors that establish financial reporting standards are called: 未知类型：{'options': ['[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]A. Regulatory authorities. [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]B. Financial services authorities. [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]C. Standard setting bodies.[/tr][/]'], 'type': 102}

If a firm chooses a capital lease over an operating lease, it can expect to have a: 未知类型：{'options': ['[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]A. lower debt-to-equity ratio. [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]B. higher debt-to-equity ratio. [/tr][/]', '[TABLE border=0 cellSpacing=0 cellPadding=0 width="90%"][TBODY][tr][TD vAlign=top]C. higher return on assets.[/tr][/]'], 'type': 102}