商务信函的常见错误辨析 — 国际贸易填空题

某业务员起草英文商务信函时出现以下做法：(1) 在结尾敬语（Complimentary Close）之前先写签名，之后又写称呼语 Dear Sirs；(2) 正文写道 At your request, we take pleasure in quoting you as follows, which we trust will receive your prompt and favorable attention, and we await with keen interest the pleasure of hearing from you in the near future at your earliest convenience. 其中做法(1)属于____错误（填：结构顺序 / 语法拼写），做法(2)主要违背了写作的____原则（填：简洁 / 准确）。