护士在调查中发现,在独生子女中引起畏食的常见原因是A.缺铁性贫血B.肠道寄生虫C...

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【单选题】

护士在调查中发现,在独生子女中引起畏食的常见原因是

缺铁性贫血

肠道寄生虫

过量补充维生素A

喂养不当

精神因素

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参考答案：

举一反三

【简答题】There were smiling children all the way. Clearly they knew at what time the train passed their homes and they made it their business to stand along the railway, wave to complete strangers and cheer th...

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【多选题】塔式起重机的工作机构主要有( )等机构。

起升机构

回转机构

变幅机构

运行机构

查看完整题目与答案

【简答题】There were smiling children all the way. Charily they knew at what time the train passed their homes and they made it their business to stand along the railway, wave to complete strangers and cheer th...

查看完整题目与答案

【简答题】There were smiling children all the way. Clearly they knew at what time the train passed their homes and they made it their business to stand along the railway, were to complete strangers and cheer th...

查看完整题目与答案

【简答题】固定自升式塔式起重机的工作机构有、、、。

查看完整题目与答案

【单选题】塔式起重机的工作机构有起升机构、回转机构、（）、运行机构。

制动机构

变幅机构

变速机构

起重机安全作业

查看完整题目与答案

【多选题】塔式起重机的工作机构有()。

起升机构

变幅机构