• Variables or traits that you want to measure needs to be defined operationally. Operational definitions explain how variables will be measured and translate a little something theoretical into a thing observable. 任何你认为重要的文件或篇幅太长而不适于放在正文中的文件，都可以被放在附件当中，比如：机构的介绍、年报、财务与审计报告、名单、数据、图表等。 •Pros must withdraw or refuse to ... https://opensocialfactory.com/story10172265/not-known-details-about-%E4%BB%A3%E5%86%99research-proposal