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绿色植物的根吸收水和无机盐最活跃的部位是根尖的()

发布日期:2021-06-04

绿色植物的根吸收水和无机盐最活跃的部位是根尖的()
A

伸长区

B

分生区

C

根冠

D

成熟区

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在上甲板装载两种爆炸品时,水平间隔至少()米才能满足要求

根据原文提供的信息,以下推断不正确的一项是(  )。

企业进行生产经营活动的物质资源是()。

可控式U形管被动减摇水舱与不可控式U形管被动减摇水舱在结构上的主要区别在于()。 a.封闭的U形管; b.能自动调节两个封闭水舱间空气连通管上的阀门; c.通过水泵强迫水舱内的水流动,可在水量有限的情况下获得较大的减摇能力。

由于从明代永乐官窑瓷开始就正式在瓷器上标注帝王年号,所以()特征是鉴定明清御窑产品的重要一环。

下列不符合原发性血小板增多症患者作血小板功能测定的结果的是()

下列不属于人力资源成为企业战略合作伙伴的要求的是()

饮用硬度较硬的水的人群的心血管病发病率较高。

下列哪个不是减小电源电阻的方法()

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