更多“可逆反应平衡常数随浓度或分压变化而改变,与温度变化无关。()”相关的问题
About fifty years ago, plant physiologists set out to grow roots bythemselvesin solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They required sugar and the usual minerals and vitamins. However, they did not require organic nitrogen compounds. These roots got along free on mineral inorganic nitrogen. Roots are capable of making their own proteins and other organic compounds. These activities by roots require energy, of course. The process of respiration uses sugar to make the high energy compound ATP, which drives the biochemical reactions. Respiration also requires oxygen. Highly active roots require a good deal of oxygen.The study of isolated roots has provided an understanding of the relationship between shoots and roots inintactplants. The leaves of the shoots provide the roots with sugar and vitamins, and the roots provide the shoots with water and minerals. In addition, roots can provide the shoots with organic nitrogen compounds. Thiscomes in handyfor the growth of buds in the early spring when leaves are not yet functioning. Once leaves begin photosynthesizing, they produce protein, but only mature leaves can "export" protein to the rest of the plant in the form of amino acids.
A.matureB.wildC.wholeD.tiny
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关于血尿的原因,最常见的是()
A.血液病
B.尿路邻近器官疾病
C.泌尿系统的肿瘤
D.药物与化学因素
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某控制按钮的型号为LA10-2K,其中2代表的是()
A.额定电流大小
B.常开触点数量
C.常闭触点数量
D.按钮数量
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在劈尖干涉实验中,劈尖夹角θ变小时,干涉条纹将()。
A.下移,条纹间距变小B.上移,条纹间距变大C.不动,条纹间距也不变D.不好确定
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《“星级服务”达标质量考核认定》中规定对有()的驾驶员,集团公司可授予高星级驾驶员称号。
A.突出事迹
B.特殊贡献
C.良好业绩
D.优秀品质
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慢性化脓性骨髓炎x线常显示有新生骨主要表现为()
A.骨质硬化
B.包壳骨包裹
C.死腔的瘢痕填塞
D.骨髓封闭
E.骨干变形
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项目生命周期的全过程中并非都需要开展项目论证与评估工作的。()
A.对 B.错
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不等式1x<12的解集是( )A.(-∞,2)B.(2,+∞)C.(0,2)D.(-∞,0)∪(2,+∞)
不等式 1 x < 1 2 的解集是( ) A.(-∞,2) B.(2,+∞) C.(0,2) D.(-∞,0)∪(2,+∞)
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踏步下落时,踝、膝、髋关节依次怎样地缓冲()
A . 意识
B . 弹性
C . 节奏
D . 放松
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目前对鼻咽癌已成功用于临床的靶向治疗是()。
A.吉非替尼
B.索拉非尼
C.EGFR单抗
D.赫赛汀
E.贝伐单抗
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学生主动参与教学活动,其实质是积极参与到教学活动的某个环节。
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日注水量()20m3的注水井,全井日注水量波动范围为±15%,超过波动范围要落实原因、进行整改。
A.等于
B.大于等于
C.小于
D.大于
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