总体标准差越大，说明总体中各单元的差异越大，平均数的代表性越小。

对资本主义工商业改造的方法是和平赎买。

钨极氩弧焊焊接铝及铝合金必须采用直流反接。

计划外生育的，也可享受生育保险

Well-arranged sentences are considered grammatical sentences that are formed following a set of syntactic rules.

把2米长的线段平均分成5份，每段长2/5米。

According to the "principles-and-parameters" theory, "principles" refer to highly abstract properties of grammar which are applied to language in general and which generate phrases and at the same time restrain the power of Move a, while "parameters" allow general principles to operate in certain restricted ways, according to which particular grammars of natural languages vary.

没有账户，科目就失去了设置的依据。

4.56÷2.3的得数保留一位小数是2.0。()

有限责任公司的资本被分为若干等额的股份。