在公差与配合中，何谓尺寸公差？
参考答案：
尺寸公差，简称公差，是指允许尺寸的变动量，即最大极限尺寸与最小极限尺才的代数差之绝对值。
Chinese economy suffered a great loss from the May 12 earthquake ____ the snow and ice storm in February,
2008. Which of the following is NOT true? [ ]
A. as well as
B. in addition
C. besides
D. apart from
假定变量x为int类型，请以最简单的形式写出与逻辑表达式!x等价的C语言关系表达式 【7】 。
