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对于国有大、中型企业，总会计师由政府主管部门提名，本单位主要行政领导人任命或者聘任。 ()
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在设计测试用例时，(88)是用得最多的一种黑盒测试方法。在黑盒测试方法中，等价类划分方法设计测试用例的步骤是：
1．根据输入条件把数目极多的输入数据划分成若干个有效等价类和若干个无效等价类；
2．设计一个测试用例，使其覆盖(89)尚未被覆盖的有效等价类，重复这一步，直至所有有效等价类均被覆盖。
3．设计一个测试用例，使其覆盖(90)尚未被覆盖的无效等价类，重复这一步，直至所有无效等价类均被覆盖。
因果图方法是根据(91)之间的因果关系来设计测试用例的。
在实际应用中，一旦纠正了程序中的错误后，还应选择部分或全部原先已测试过的测试用例，对修改后的程序重新测试，这种测试称为(92)。
软件测试的目的是(53)。为了提高测试的效率，应该(54)。使用白盒测试方法时，确定测试数据应根据(55)和指定的覆盖标准。一般说来与设计测试数据无关的文档是(56)。软件的集成测试工作最好由(57)承担，以提高集成测试的效果。
Social security tax is collected from______.
Taxes (税) are a big part in the United States. Most Americans pay city taxes, state taxes, social security (安全) taxes, sales taxes … and the list seems endless.
The biggest tax for most Americans is that on the money they earn—the income tax. The personal income tax is called a "progressive tax" because it takes more from those who earn more. For example, a person who earns about 3,500 dollars a year will pay a tax of only about 3.5% of earning, but of the same person earned 85,000 dollars a year, he would pay an income tax of 35%.
Over the years the income tax has become more and more difficult for people to understand. Almost one half of all Americans now have to pay experts to prepare their tax reports in fact, preparing taxes and giving tax advice have become a big industry in America.
Most Americans pay______.
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