The critical gel concentration of gelatin is ( ).
A: 8%
B: 5%
C: 3%
D: 0.6%
A: 8%
B: 5%
C: 3%
D: 0.6%
举一反三
- The gel formed by methyl cellulose and gelatin can form a gel at a high temperature or a low temperature and is in the form of a solution at a medium temperature, which is called. A: concave gel B: convex gel C: hot gel D: cold gel
- A solution whose hydroxide concentration is 10-8 M, the pH of the solution is A: 5 B: 6 C: 7 D: 8
- 以下是目标变量在训练集上的 8 个实际值 [0,0,0,1,1,1,1,1],目标变量的熵是所少() A: -(5/8 log(5/8) + 3/8 log(3/8)) B: 5/8 log(5/8) + 3/8 log(3/8) C: 3/8 log(5/8) + 5/8 log(3/8) D: 5/8 log(3/8) – 3/8 log(5/8)
- 已知随机变量X的概率密度为[img=211x61]18034eb917c1e92.png[/img],且E(X)=0.6,则_______. A: a=5/3, b=5/6 B: a=0.6, b=1 C: a=0.6, b=1.2 D: a=5/3, b=1
- 茶鲜叶中的生物碱约占干物质的() A: 1%左右 B: 0.6—1.0% C: 8%左右 D: 3%—5%