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【单选题】
在滴定分析法测定中出现下列情况,哪种导致系统误差A.
试样未经充分混匀
B.
滴定管的读数读错
C.
滴定时有液滴溅出
D.
加错砝码
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反馈参考答案：
举一反三
【简答题】听下面一段材料，回答第1-3题。 1. Why did the officer want to see the driver's license? A. Because the driver was speeding. B. Because the driver was a stranger. C. Because the driver took the wrong turn. 2. How fa...
【判断题】When an individual firm in a competitive market decreases its production, it is likely that the market price will rise.
A.
正确
B.
错误
【单选题】听力原文：M: Hello. I need to talk with someone about my driver's license. W: Yes. How may I help yon? Do you have a driver's Ii cerise, or do you need to get one? M: Well, I'm not sure. You see, I have an...
A.
The man wants to obtain an international driver's license that he can use both in the U.S. and in his country.
B.
The man wants to take a driver's test to get an Arizona driver's license.
C.
The man wants to know whether he can use his international driver's license in Arizona.
D.
The man wants to fill out an application for an Arizona driver's license.
【简答题】RTB广告的特点在于( )投放
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