皮皮学，免费搜题
登录
搜题
【单选题】
下列各组混合液中，能作为缓冲溶液的是A.
10 ml 0 . 2 mol / L HCl 和 10 ml 0 . 1 mol / L NaCl
B.
10 ml 0 . 2 mol / L HAc 和 10 ml 0 . 1 mol / L NaOH
C.
10 ml 0 . 2 mol / L HAc 和 10 ml 0 . 3 mol / L NaOH
D.
10 ml 0 . 2 mol / L HCl 和 10 ml 0 . 2 mol / L NaOH
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】On his way to the airport，it ________him all of a sudden that he had forgotten his passport.
A.
hit
B.
knocked
C.
occurred
D.
beat
【单选题】All of a sudden, he lost his interest in engineering, and his attention on learning a foreign language.
A.
focused
B.
estimated
C.
adopted
D.
analyzed
【单选题】On his way to the airport, it ________ him all of a sudden that he had forgotten her birthday.
A.
hit
B.
knocked
C.
occurred
D.
beat
【简答题】All of a sudden, he lost his interest in math, and focused his attention a foreign language.
【单选题】All of a sudden, he lost his interest in engineering, and his attention on learning a foreign language.
A.
focused
B.
regulated
C.
analyzed
D.
estimated
【单选题】All of a sudden，he rushed out of the room，________never to come back again. [ ]
A.
determine
B.
to determine
C.
determined
D.
having determined
相关题目：
参考解析：
知识点：
题目纠错 0
发布
