搜题请搜索小程序“爱下问搜题”
问题 单项选择题

中国药典(2005年版)规定，精密标定的滴定液正确表示为

A．HClO4
B．HClO4滴定液(0.1032mol/L)
C．HClO4滴定液(0.1032M/L)
D．0.1032M/L HClO4滴定液
E．HClO4标准滴定液

答案

参考答案：B

解析：中国药典(2005年版)对滴定液写法规定。

补全对话，情景问答
根据对话内容,选择适当的句子补全对话。
A. By bike or by bus.
B. Nobody, I think.
C. Fine, thanks.
D. By bike, but my bike is broken today.
E. Most of them live near our school, so they usually walk to school.
Jim: Hello, Ann. How are you?
Ann: __1__
Jim: How do you usually come to school?
Ann: __2__
Jim: I'm sorry to heat that. How do most students in your class come to school?
Ann: __3__
Jim: What about the other students?
Ann: __4__
查看答案
单项选择题

施工现场必须设置消防车通道，通道宽度应不小于（）。

A．3m  

B．3.5m 

C．4m 

D．4.5m
查看答案