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【单选题】
0.1mol/L HA(pK a =5.0) 溶液中加入 2 克 固体氢氧化钠 (M=40g/mol) 后 , 溶液的 pH 值与哪一个最为接近A.
3.0
B.
3.7
C.
5.0
D.
6.3
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皮皮学刷刷变学霸
举一反三
【简答题】盘左、盘右是仪器的两种状态,盘左是( )在( )左侧;盘右则反之。观测同一目标的盘左、盘右水平度盘读数之差的理论值应为( )度。
【单选题】点击播放听力音频： Section A Directions：This section is to test you’re ability to understand short dialogues．There are 5 recorded dialogues in it．After each dialogue,there is a recorded question．Both the dialo...
A.
At the downstairs．
B.
In the closet．
C.
In the drawer．
D.
In the living room．
【单选题】If you want to improve your position and find a good job，it is important to______．
A.
understand the application form. of the company
B.
make a decision on the basis of your own desire
C.
improve your writing skills
D.
get a job related to your education
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【单选题】You can make yourself _____ in English quite well if you keep on speaking the language. [ ]
A.
understood
B.
understand
C.
to understand
D.
understanding
【简答题】盘左、盘右是仪器的两种状态,盘左是( )在( )左侧;盘右则反之。观测同一目标的盘左、盘右水平度盘读数之差的理论值应为( )度。
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【简答题】--Have a nice trip.Take care. ---Thanks, ____ Bye. A. too you B you too C. also you D. you also