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【单选题】
有①Na 2 CO 3 溶液 ②CH 3 COONa溶液 ③NaOH溶液各25mL，物质的量浓度均为 0.1mol·L -1 ，下列说法正确的是 [ ]A.
3种溶液pH的大小顺序是③>②>①
B.
若将3种溶液稀释相同倍数，pH变化最大的是②
C.
若分别加入25mL 0.1mol·L -1 盐酸后，pH最大的是①
D.
若3种溶液的pH均为9，则物质的量浓度的大小顺序是③>①>②
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皮皮学刷刷变学霸
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【简答题】Q21: What does Mr. Kibara find about purple tea?
【单选题】What does Mr. Kibara find about purple tea?
A.
It has been well received by many tea drinkers.
B.
It does not bring the promised health benefits.
C.
It has made tea farmers' life easier.
D.
It does not have a stable market.
【单选题】What has Mr. Kibara found about purple tea?
A.
It has been well received by many tea drinkers.
B.
It does not bring the promised health benefits.
C.
It has made tea farmers' life easier.
D.
It does not have a stable market.
【单选题】商业银行只能向客户销售风险评级等于或低于其风险承受能力评级的理财产品是商业银行销售理财产品时应当遵循的( )原则。
A.
公开
B.
公正
C.
诚实守信
D.
风险匹配
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