皮皮学，免费搜题
登录
搜题
【单选题】
Why is Thomas Jefferson mentioned in this passage?A.
As an example of interracial intimacy.
B.
Because he was a slave owner and was strongly against interracial marriages.
C.
Because he was one of the early advocates of interracial marriages.
D.
Because he married a black woman.
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
【简答题】问句答语连线。 ( ) 1. What's this? ( ) 2. Do you know? ( ) 3. Where's Beijing? ( ) 4. Where's Japan? ( ) 5. What colour is it? A. It's in the north of China. B. It's red. C. Yes. D. It's...
【简答题】改错题。 1. Where's Wuhan and Changsha? ________ 2. Where're the flowers? It's on the table. ________ 3. There is a picture book on dresser. ...
【单选题】以0.100mol·L -1 NaOH滴定20.00mL 0.100mol·L -1 盐酸羟胺(pK b =8.00)溶液,则滴定至化学计量点的pH是:
A.
2.5
B.
2.65
C.
4.65
D.
9.35
【单选题】以 0.100mol·L -1 NaOH 滴定 20.00mL0.100mol·L -1 盐酸羟胺 ( PKb =8.00) 溶液,则滴定至化学计量点的 pH 是
A.
2.5
B.
2.65
C.
4.65
D.
9.35
【单选题】以 0.100 mol·L – 1 NaOH 滴定 20.0 mL 0.100 mol·L – 1 HCl 和 2.0 × 10 – 4 mol·L – 1 盐酸羟胺(羟胺的 p K b = 8.00 )混合溶液,则滴定 HCl 至化学计量点的 pH 是( )。
A.
5.00
B.
6.00
C.
5.50
D.
5.20
相关题目：
参考解析：
知识点：
题目纠错 0
发布
