一5岁男童，母亲领其到医院就医，述说该患儿食欲差、偏食、不吃肉，体重、身高均未达到同龄儿童的水平，且易感冒。

此种表现可能是

A．锌缺乏

B．铁缺乏

C．碘缺乏

D．钙缺乏

E．铜缺乏

A project management team wants to procure some customized products which are available in identical grade and quality from many vendors．What should be included in the procurement package to ensure that their offers will be comparable ？（）

A．A statement of work describing the needs of the project in sufficient detail to enable vendors to make suitable proposal

B．A statement of work specifying attributes and metrics of the requested deliverables in detal to allow vendors Submission of bid

C．The approved project scope statement，the WBS which should be broken down to work package level and the WBS dictionar

D．The risk management plan and the reports from those risk management reviews which have been made so fa