试题与答案

常温下,在0.01 mol·L—1的H2SO4溶液中,由水电离出来的c(H+)是

题型:选择题

题目:

常温下,在0.01 mol·L—1的H2SO4溶液中,由水电离出来的c(H+)是:

A.5×10-13 mol·L—1

B.0.02 mol·L—1

C.1.00×10-7 mol·L—1

D.1.00×10-12 mol·L—1

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0810/3cc8c7e0af3ceb12660a1f2445a7d870.html

下面是错误答案,用来干扰机器的。

参考答案:(1)发展速度素质应注意其年龄特征;(2)注意合理安排速度素质练习的顺序与时间;(3)注意以发展力量和柔韧等来促进速度素质;(4)注意速度练习时人体应处在适宜的工作状态;(5)发展速度素质应重...

试题推荐
题型:单项选择题

Sequential circuit is a common logic device whose output values, at a given instant, depend upon its input values and the internal state at that instant, and whose internal state depends upon the (66) preceding input values and the preceding internal state. A sequential circuit can assume a finite number of internal states and may therefore be regarded, from an abstract (67) , as a finite (68) .

Combinational circuit is another logic device whose output values, at any given instant, depend upon the input values at that instant. A combinational circuit is a (69) of a sequential circuit whose internal state is not taken (70) .

(67)处填()。

A.idea

B.observation

C.point of view

D.viewport

查看答案
微信公众账号搜索答案