【判断题】同一细胞处于不同的生长时期,基因组中的可转录区域是相同的。
【单选题】In k-NN what will happen when you increase/decrease the value of k?
A.
The boundary becomes smoother with increasing value of K
B.
The boundary becomes smoother with decreasing value of K
C.
Smoothness of boundary doesn’t dependent on value of K
【判断题】农耕文化包含农耕物质文化与农耕精神文化两层内容。
【单选题】When the dietary intake of K+ increases, body K+ balance is maintained by an increase in K+excretion primarily by which of the following?
A.
Increased K+ secretion by the late distal and collecting tubules
B.
Decreased glomerular filtration of K+
C.
Decreased reabsorption of K+by the proximal tubule
D.
Decreased reabsorption of K+ by the thick ascending limb of the loop of Henle
E.
Shift of K+ into the intracellular compartment
【简答题】“全面、均衡、适量一一培养健康的饮食行为”是今年中国学生营养日的主题。合理健康的饮食习惯有利于提高生命质量,营养师提供了“膳食宝塔”中各类食物的摄入量(如下表所示),请分析回答: (1)某同学牙龈经常出血,原因可能是对第___________层食物摄入量不足。 (2)蛋白质是构成人体细胞的基本物质,它主要从第___________层食物中获得;人体摄入的蛋白质在_____________内初步消化...
【单选题】定时器T5的设定值为K30时,则T5对应常开触点在定时开始()秒后闭合。
【判断题】现代意义的第一架飞机是美国莱特兄弟于1903年滑翔机的基础上安装发动机,造出了第一架动力飞行器,飞行 36米。