药典规定，异烟肼中游离肼可根据其与（）反应，生成腙，显黄色来_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

药典规定，异烟肼中游离肼可根据其与（）反应，生成腙，显黄色来检查。

A.亚硝酸

B.β-萘酚

C.FeCl₃

D.对二甲氨基苯甲醛

答案

参考答案：D

补全对话，情景问答

根据所给句子，选择最佳的应答语。每个选项只能用一次。

(    ) 1.  Is the longest river in Asia the Yangtze River?
(    ) 2.  Did you know that Qomolangma is the highest mountain in the world
(    ) 3.  Which is the second river in China?
(    ) 4.  Was there a serious flood in northeastern China in August,  2005?
(    ) 5.  Then things went from bad to worse.

A. Yes, They did.
B. Yes, it is.
C. Yes, I did.
D. Yes, there was
E.The Yellow River.
F. The Changjiang River.

单项选择题

下面类的声明中的几个语句，正确的是(设定语句是主函数中的语句)( )。
class TestClass

private:
int data;
public:
TestClass(int g_dat

A．

data=g_data;