液体某点的绝对压强为58kPa,则该点的相对压强为()kPa
A. 156
B. 40
C. -58
D. -40
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水平放置的管道,当管内水流为恒定均匀流时,动水压强沿程( )
A. 变小
B. 变大
C. 不变
D. 无法确定
1、按连续介质的概念，流体质点是指（ ）
A. 流体的分子
B. 流体内的固体颗粒
C. 无大小的几何点
D. 几何尺寸同流动空间相比是极小量，又含有大量分子的微元体
the relationship of Km to the affinity of substrate is ( )
A. Km smaller, the stronger the affinity
B. Km larger, the stronger the affinity
C. Km has no relationship of affinity
D. Km smaller, the weaker the affinity
E. 1/Km smaller, the stronger the affinity
The base sequence of DNA template is 3-TACAGT-5, the base sequence of its RNA transcript should be ()
A. 5'-AUGUCA-3'
B. 5'-ATGUCA-3'
C. 5'-UCGUCU-3'
D. 5'-ACGTCA-3'
E. 5'-ACGUGT-3'
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