翻译：We advised you in our letter of Dec.1, that we would like to place a trial order with you for 50 pieces Flying Pigeon Bicycles.

名词解释：营养性缺铁性贫血

名词解释：脑复苏

请说出腹泻患儿的护理措施?

精神分裂症慢性期主要症状是 _____、______、意志缺乏，称阴性症状。