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问题 单项选择题

2007年3月，全国人大审议通过新《企业所得税法》，该法将法定税率水平确定在25%，对外资企业的过渡期设定在（）。

A.1～3年

B.3～5年

C.3～6年

D.2～5年

答案

参考答案：B

单项选择题

When you think of the Internet, you probably think of ".com." Just what do those three letters at the end of a World Wide Web address mean Every computer that hosts data on the Internet has a (71) numerical address. For example, the numerical address for the White House is 198.137.240.100. But since (72) people want to remember long strings of numbers, the (73) was developed. It is a critical part of the Internet’s technical infrastructure, correlates a numerical address to a word. To (74) the White House website, you could type its numerical address into the address box of your web browser. But most people prefer to use "www. whitehouse. gov." In this case, the domain name is (75) .

（71）处填（）。

A．unique

B．isolated

C．similar

D．same
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单项选择题 B型题

用于定量的参数是（）

A.色谱峰高或峰面积

B.死时间

C.色谱峰保留时间

D.色谱峰宽

E.色谱基线
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