比例尺分为数字比例尺、直线比例和（）三种。

某公司请质量专家就近期顾客反馈非常强烈的产品质量问题进行诊断，专家诊断认为问题的原因是在产品形成过程质量控制中，未深入对产品质量特性及其与适用性的关系影响进行分析。同时，还拟请质量专家对本公司质检站和检验的技术方法等相关控制要素进行诊断。如果你是质量专家，请考虑提出质量检验的相关建议。

该公司的产品质量检验的检测装置或测量、试验设备(系统)集成在产品的生产过程中，构成过程装备的组成部分。专家指出其局限性外，同时也肯定其在线检测优点包括( )等方面。

A．在产品形成过程中同步在线上进行多参数测量，最大限度地扩大检测范围

B．实施主动或自动测量，可适时调整工艺过程参数，极大限度避免或减少不合格品产生

C．可消除人为的影响因素，极大地提高了检测的效率和质量

D．不宜用于产品的最终检验，尤其是结构、性能复杂的产品

将0.65克Zn粉加入到200ml的足量CuSO₄溶液中，锌粉完全溶解，（不考虑反应前后溶液体积的变化）求：

（1）析出铜的物质的量；  

（2）生成ZnSO₄的物质的量及其物质的量浓度；  

（3）溶液的质量是增加了还是减少了，变化了多少克，说明理由．

实际上，嗨塞坡为一种对产品不采取破坏性操作的“洋策略”。

结构化方法中最重要的两个阶段是______和系统设计。

Throughout the 19th century and into the 20th, citizens of the United States maintained a bias against big cities. Most lived on farms and in small towns and believed cities to be centres of (1) , crime, poverty and moral (2) Their distrust was caused, (3) , by a national ideology that (4) farming the greatest occupation and rural living (5) to urban living. This attitude (6) even as the number of urban dwellers increased and cities became an essential (7) of the national landscape. Gradually, economic reality overcame ideology. Thousands (8) the precarious (不稳定的) life on the farm for more secure and better paying jobs in the city. But when these people (9) from the countryside, they carried their fears and suspicions with them. These new urbanities, already convinced that cities were (10) with great problems, eagerly (11) the progressive reforms that promised to bring order out of the (12) of the city.

One of many reforms came (13) the area of public utilities. Water and sewerage systems were usually operated by (14) governments, but the gas and electric networks were privately owned. Reformers feared that the privately owned utility companies would (15) exorbitant (过渡的) rates for these essential services and (16) them only to people who could afford them. Some city and state governments responded by (17) the utility companies, but a number of cities began to supply these services themselves. (18) of these reforms argued that public ownership and regulation would (19) widespread access to these utilities and guarantee a (20) price.

（1）（）

A.eruption

B.corruption

C.interruption

D.provocation